Heinrich Göbel (April 20, 1818December 4, 1893) was a German-born American precision
mechanic
A mechanic is a skilled tradesperson who uses tools to build, maintain, or repair machinery, especially engines. Formerly, the term meant any member of the handicraft trades, but by the early 20th century, it had come to mean one who works w ...
and
inventor
An invention is a unique or novel device, method, composition, idea, or process. An invention may be an improvement upon a machine, product, or process for increasing efficiency or lowering cost. It may also be an entirely new concept. If an ...
also known by his
anglicized
Anglicisation or anglicization is a form of cultural assimilation whereby something non-English becomes assimilated into or influenced by the culture of England. It can be sociocultural, in which a non-English place adopts the English language ...
name Henry Goebel. In 1848 he
immigrated to
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
, where he resided until his death. He received American citizenship in 1865.
In 1893, magazines and newspapers reported that 25 years earlier Göbel had developed
incandescent light bulbs
An incandescent light bulb, also known as an incandescent lamp or incandescent light globe, is an electric light that produces illumination by Joule heating a filament until it glows. The filament is enclosed in a glass bulb that is either ...
comparable to those invented in 1879 by
Thomas Alva Edison
Thomas Alva Edison (February11, 1847October18, 1931) was an American inventor and businessman. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions ...
. Göbel did not apply for a patent for this invention.
In 1893, the
Edison Electric Light Company
General Electric Company (GE) was an American multinational conglomerate founded in 1892, incorporated in the state of New York and headquartered in Boston.
Over the years, the company had multiple divisions, including aerospace, energy, ...
sued three manufacturers of incandescent lamps for infringing Edison's
patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an sufficiency of disclosure, enabling discl ...
. The defense of these companies claimed the Edison patent was void because of the same invention by Göbel 25 years earlier, which came to be known as the ''Goebel defense''.
Judges of four courts raised doubts; there was no clear and convincing proof for the claimed invention. Research work published in 2007 concluded that the Goebel defense was fraudulent.
After Göbel's death the legend arose in some countries that he was the true inventor of the practical incandescent light bulb.
Göbel acquired patents for an improvement of sewing machines in 1865, for an improvement of the Geissler pump in 1882, and for a technique to connect carbon threads to metal wires in incandescent lamps in 1882. These three patents have had no influence on further technical developments to date.
Biography
Springe, Germany 1818–1848

On April 20, 1818, Heinrich Göbel was born in Springe near
Hanover
Hanover ( ; ; ) is the capital and largest city of the States of Germany, German state of Lower Saxony. Its population of 535,932 (2021) makes it the List of cities in Germany by population, 13th-largest city in Germany as well as the fourth-l ...
in Germany. His father, Heinrich Christian Göbel, was a gardener and later a door-to-door salesman for chocolate. The name of his mother was Marie Eleonore née Hüper. At that time Springe was a small village in the
Kingdom of Hanover
The Kingdom of Hanover () was established in October 1814 by the Congress of Vienna, with the restoration of George III to his Hanoverian territories after the Napoleonic Wars, Napoleonic era. It succeeded the former Electorate of Hanover, and j ...
with less than 2000 inhabitants that mostly worked in agriculture.
Heinrich Göbel finished school in 1832 with poor marks. One teacher commented, "He seems to have an inventive mind. The reasons of the poor marks appear to be in his lengthy illness."
In 1834, master
locksmith
Locksmithing is the work of creating and bypassing locks. Locksmithing is a traditional trade and in many countries requires completion of an apprenticeship. The level of formal education legally required varies by country, ranging from no formal ...
Gerhard Linde of Springe took on Göbel as an apprentice for three years. It is not known whether Göbel finished this
apprenticeship
Apprenticeship is a system for training a potential new practitioners of a trade or profession with on-the-job training and often some accompanying study. Apprenticeships may also enable practitioners to gain a license to practice in a regulat ...
. Göbel started to work as a repair mechanic in 1837. Later in the 1850s in New York, he gave 1837 as the foundation date of his business on a business card of his shop.
In 1844, Göbel married Sophie Lübke née Rodewig, stating watchmaker as his profession at that time. There are no sources to confirm training as watchmaker, but Göbel likely learned by doing work comparable to a precision mechanic before he began operating his one-person business repairing and selling clocks.
His son Johann Carl was born 1846, and his daughter Marie Sophie in 1848.
At the age of 30, Göbel migrated to New York City with his family, leaving Germany through
Bremen
Bremen (Low German also: ''Breem'' or ''Bräm''), officially the City Municipality of Bremen (, ), is the capital of the States of Germany, German state of the Bremen (state), Free Hanseatic City of Bremen (), a two-city-state consisting of the c ...
in November 1848 on the sailing ship , arriving in New York on 31 January 1849. According to the list of passengers of the ship, he gave mechanic as his profession. The reasons for migration are not known.
New York 1849–1893
In New York City, Göbel opened a shop in Monroe Street called ''Jewelry, Horology and Optician's Store''. To supplement his income, Göbel constructed a
telescope
A telescope is a device used to observe distant objects by their emission, Absorption (electromagnetic radiation), absorption, or Reflection (physics), reflection of electromagnetic radiation. Originally, it was an optical instrument using len ...
. In the 1850s and 1860s he frequently transported his large telescope on a horse wagon to
Union Square in the evening, and for a fee people could use his telescope to observe the stars. In litigations of the year 1893 many persons remembered the ''telescope-man''.
On March 23, 1865, he took the oath on the
Constitution of the United States
The Constitution of the United States is the Supremacy Clause, supreme law of the United States, United States of America. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally includi ...
and was henceforth an American citizen, signing with ''Henry Goebel''. The anglicisation of his name took place sometime after 1852.
On May 9, 1865, Göbel obtained U.S. Patent No. 47632 (''Hemmer for sewing machines''). He probably got the idea when thinking about how to make the sewing work of his daughter more easy.
However, he was not successful in monetising the patent.
Göbel moved his shop to Grand Street 500 in 1872 and to Grand Street 468 in 1877.
In 1881, Göbel Goebel worked for the ''American Electric Light Co.'' for half a year, where there was a need for precision mechanics for the construction of electric lamps. He also produced carbon filaments in his shop for the company. He then tried to start his own business in the field of incandescent light bulbs with his friend John Kulenkamp. Both were members of a Lodge of
Freemasons
Freemasonry (sometimes spelled Free-Masonry) consists of fraternal groups that trace their origins to the medieval guilds of stonemasons. Freemasonry is the oldest secular fraternity in the world and among the oldest still-existing organizati ...
of German immigrants.
On April 30, 1882, the ''New York Times'' reported on an exhibition of incandescent light bulbs in Göbel's shop. According to this report, Göbel claimed the electric light was by no means as new an invention as it was popularly supposed to be, and that he knew this kind of light since his time in Germany. He affirmed he produced electric lights since the 1850s, without giving technical details. The lamps on exhibition were incandescent light bulbs with carbon-filaments of high resistance, made of fibres of reed.
Two patents were granted to Heinrich Göbel in 1882: an improvement of the Geissler system of vacuum pumps, and a solution to connect carbon-filaments and metal-wires in a light bulb.
In 1882, Göbel offered to sell his inventions to the Edison Electric Light Co. for a few thousand dollars, but Edison did not see enough merit in the invention to accept the offer.
In the 1880s, some patent attorneys visited Göbel because of the 1882 story in the ''New York Times''. They were interested in early incandescent light bulbs to put Edison's patent of 1880 into question. Later, they said, there was not much evidence, and Göbel was not able to present old lamps.
In 1887, Göbel's wife Sofie died. They had at least eight more children in the US; seven of whom survived both parents.
Göbel retired in the late 1880s, and his son Henry became the owner of the shop.
In 1893, New York patent attorneys Witter & Kenyon became defense counsel in three cases of patent infringement, with Göbel becoming their primary witness and used his 1882 story to create the ''Göbel defense''. Lawsuits using the ''Göbel defense'' continued until May 1894.
Heinrich Göbel died on December 4, 1893, from
pneumonia
Pneumonia is an Inflammation, inflammatory condition of the lung primarily affecting the small air sacs known as Pulmonary alveolus, alveoli. Symptoms typically include some combination of Cough#Classification, productive or dry cough, ches ...
. He was buried at
Green-Wood Cemetery
Green-Wood Cemetery is a cemetery in the western portion of Brooklyn, New York City. The cemetery is located between South Slope, Brooklyn, South Slope/Greenwood Heights, Brooklyn, Greenwood Heights, Park Slope, Windsor Terrace, Brooklyn, Win ...
.
The work for the ''American Electric Light Co.'' in 1881, the patents from 1882, and the report in the ''New York Times'' from April 30, 1882 are the earliest clear sources for work of Heinrich Göbel related to incandescent electric light bulbs. No earlier source is known to prove any kind of relation with incandescent light bulbs, nor indeed any kind of work in the field of electricity.
The claimed Göbel anticipation concerning Edison's incandescent light bulb patents
Litigation using the "Göbel defense" in 1893 and 1894

In 1892, the litigation ''Edison Electric Light Co. vs.
United States Electric Lighting Co.'' from 1885 came to a final decision. The court confirmed the patents of Thomas Edison related to the incandescent light bulb.
Based on this decision, Edison Electric brought suits to obtain
preliminary injunction
An injunction is an equitable remedy in the form of a special court order compelling a party to do or refrain from doing certain acts. It was developed by the English courts of equity but its origins go back to Roman law and the equitable reme ...
s to close the productions of incandescent light bulbs of the Beacon Vacuum Pump and Electrical Company,
Boston
Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...
; Columbia Incandescent Lamp Company,
St. Louis
St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a populatio ...
; and Electric Manufacturing Company,
Oconto, Wisconsin
Oconto is a city and county seat of Oconto County, Wisconsin, United States. The population was 4,609 at the 2020 census. It is part of the Green Bay metropolitan area. The city is located partially within the town of Oconto.
History
Oconto ...
.
Patent attorneys Witter & Kenyon became defense counsel in all three cases. They declared Edison's patents void because it was not a novelty in 1880. Their witness, Heinrich Göbel, made a claim he had designed the first practical incandescent electric light bulb in 1854. He said he had used his lamps for personal purpose without applying for a patent. The counsels called this an "overseen invention". Göbel was an unknown person at that time.
Göbel's main evidence was discounted by U.S. patent courts. Göbel himself was the most important witness of the defendant companies. Witter & Kenyon worked out an extensive defense with several hundred pages of affidavits. So-called ''Original Lamps '' were presented at court. Witnesses said they existed earlier than 1880. Furthermore, so-called ''Reproduced Lamps'' were presented at court. Witnesses said Göbel had produced these lamps himself at Beacon Vacuum Pump and Electrical Company, using his old tools. In 1893, Heinrich Göbel was 75. He said that he had lost a lot of lamps and tools for the production of lamps when he left his shop in New York years ago.
In the case ''Edison Electric Light Co.'' vs. ''Columbia Incandescent Lamp Co., St. Louis'' 181 persons supported the ''Goebel-Defense'' providing
affidavit
An ( ; Medieval Latin for "he has declared under oath") is a written statement voluntarily made by an ''affiant'' or ''deposition (law), deponent'' under an oath or affirmation which is administered by a person who is authorized to do so by la ...
s and 142 persons supported the Edison view.
The view of the ''Edison Electric Light Co.'' was Göbel did not built practical incandescent light bulbs before 1880. The counsels of the ''Goebel-Defense'' didn't provide any documentation or convincing proof which could be dated without any doubt to a time earlier than 1880, the year the patent was granted to Thomas Edison.
Many persons providing affidavits in 1893 said that they had seen the electric lamps of Henry Goebel in the 1850s to the 1870s. Henry Goebel used his lamps according to these affidavits for the advertisement of his shop in New York and for the advertisement of his telescope at Union Square, New York. Members of Goebel's family and friends of them affirmed the usage of incandescent lamps in the daily life of the family before the year 1880. The most surprising story for the public was the alleged usage of incandescent lamps for the advertisement of Goebel's telescope in the center of New York for years. It was said, thousands of New Yorkers had seen Goebel's lamps. Approximately 75 witnesses confirmed this in affidavits; approximately the same number of witnesses remembered oil-lamps only.
Goebel claimed his lamp contained a high resistance filament of carbon, platinum lead-in wires in an all-glass envelope, and a high vacuum produced with the
Torricellian method using
mercury. He tried several materials to produce the carbon filaments and discovered the advantages of
bamboo
Bamboos are a diverse group of mostly evergreen perennial plant, perennial flowering plants making up the subfamily (biology), subfamily Bambusoideae of the grass family Poaceae. Giant bamboos are the largest members of the grass family, in th ...
. These solutions were exactly the results of the research work of the ''Edison Electric Light Co.'' and the novelties of Edison's patents.
Technical experts of both sides gave their opinion about the Goebel lamps and the claimed way of production in affidavits. Experts of the Edison side contested the quality of the lamps and the possibility to produce lamps using the affirmed procedure. Experts of the ''Goebel-Defense'' confirmed the quality of the lamps and the method of production. Witnesses of the ''Goebel-Defense'' said, that reproduced lamps burnt 45, 87 and 166 hours.
Edison's lamps burnt at time of applying for a patent approximately 40 hours. So-called ''Goebel Original Lamps'' were broken in 1893. Experts of the Edison side said that they never burnt.
Lewis Latimer, an employee of the ''Edison Electric Light Co.'' and responsible to support their counsels, discredited Goebel by demonstrating that his supposed 1870s bulb (Goebel Lamp No. 4) had been built much later. Professor van der Weyde, an 80 years old physicist, said in his affidavit, he had seen Goebel's telescope and his incandescent lamps. Later he withdrew his affidavit. Witter & Kenyon expressed suspicions of
bribery
Bribery is the corrupt solicitation, payment, or Offer and acceptance, acceptance of a private favor (a bribe) in exchange for official action. The purpose of a bribe is to influence the actions of the recipient, a person in charge of an official ...
of witnesses. The newspapers reported about some turbulent phases in these lawsuits during the year 1893.
Judge
Colt (''Edison Electric Light Co.'' vs. ''Beacon Vacuum Pump and Electrical Company, Boston'') explained how he ruled based on probabilities:
The opinion of Judge Hallett in the case ''Edison Electric Light Co.'' vs. ''Columbia Incandescent Lamp Co., St. Louis'':
The opinion of Judge Seaman in the case ''Edison Electric Light Co.'' vs. ''Electric Manufacturing Co., Milwaukee'':
The opinion of Judge Jenkins in the case ''Electric Manufacturing Co. vs. ''Edison Electric Light Co.'', appeal, Chicago'' was based on the last development of the ''Goebel-Defense'' with new affidavits and withdrawn affidavits in May, 1894:
A decision, whether the Goebel anticipation was held true or untrue, required a final hearing, but there was never a final hearing in the litigations using the ''Goebel-Defense''. It was the responsibility of the ''Edison Electric Light Co.'' to move the case in St. Louis to a final hearing. Probably they did it not because of the expiry date of Edison's patent in 1894 and high cost.
It is not sure, that the proof of the alleged anticipation was the true strategy of the counsels of the defense. Perhaps the aim of the extensive ''Goebel-Defense'' was to avoid a decision of a final hearing before the expiry date of Edison's patent. This was successful in the case of the ''Columbia Incandescent Lamp Co''. The company produced lamps without interruption though they never proved the invalidity of Edison's patent.
In two cases the preliminary injunction was granted, in one case the injunction was denied. In Philadelphia another injunction was granted in a suit filed by the ''Edison Electric Light Co.'' to stop the usage of patent infringing lamps at some companies. The counsels of the defense in this case used the arguments of the ''Goebel-Defense''. The judges referred to the previous decisions. They did not form their own opinion about the Goebel claim of anticipation.
The point of controversy in these lawsuits between the ''Edison Electric Light Co.'' and their competitors was money. It was not a controversy about the honor to be the inventor of the incandescent light bulb. There was no benefit for Henry Goebel in these suits. He said, he was not interested in the decisions of the courts and that he had no hostile mind towards Thomas Edison. In an affidavit he said he got no money for providing details of his work concerning incandescent lamps.
The claim of the ''Goebel Defense'' fulfilled the legal requirements for challenging the Edison patent without having to assert any influence or effect of the alleged invention outside the private sphere of Goebel. An invention with merit of technical progress for the benefit of the general public, however, was not claimed.
Historical extrajudicial investigations and views on the anticipation claim
During the litigations most newspapers reported with a neutral point of view, but some raised doubts about the alleged Goebel anticipation.
"A romantic story of the poor inventor Goebel which will be forgotten soon" was the commentary of a technical magazine in Germany.
The journalist Tanner from
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
visited Springe, Göbel's native town, and interviewed some people there. In his article published in ''The Electrical Review'' in February 1894 he wrote, that nobody had confirmed the alleged work of Göbel related to electricity before leaving Germany. Tanner reported that Göbel's alleged teacher in the field of electricity and electric lamps, Professor Münchhausen, was an unknown person in Springe and Hanover. Göbel said in one of his affidavits that he had learned the professions of a watchmaker and an optician. In Springe Tanner got the information, that Göbel had learned the profession of a locksmith.
Investigations in recent years
Investigations in recent years partially corroborated the findings in the article by Tanner.
One important point is, that there is no source to confirm Goebel's alleged source of knowledge in the fields of electricity and vacuum physics. Goebel claimed that he had worked together with a certain Professor Münchhausen in the 1840s, that he had constructed equipment for experiments at today's
Leibniz University Hannover
Leibniz University Hannover (), also known as the University of Hannover, is a public university, public research university located in Hanover, Germany. Founded on 2 May 1831 as Higher Vocational School, the university has undergone six period ...
(at that time called ), that he had assisted experiments related to electric light, that he had got the idea and the basic concept of the design of an electric incandescent lamp from Professor Münchhausen and that he had continued with experiments on electric light on his own in New York. A person Professor Münchhausen was not known in the Kingdom of Hanover in the 1830s and 1840s, there is no documentation of experiments on electric light in the Kingdom of Hanover in the 1840s and no source for deliveries of equipment or any other kind of relation of Henry Goebel to today's Leibniz University Hannover.
As one result of investigations in Germany and in the US and an analysis of all documents of the litigations with ''Goebel-Defense'' Hans-Christian Rohde stated in his dissertation, that there is no source from the time prior to 1880 to support the assumption of a relation of Henry Goebel to incandescent lamps prior to 1880.
His thesis is, that Henry Goebel got the knowledge when working for the ''American Electric Light Co.'' in 1881 and was not busy with incandescent lamps before.
A philological analysis of all affidavits of the ''Goebel-Defense'' manifested numerous contradictions and improbabilities. This and the lack of independent sources in the archives to confirm claims of Henry Goebel support the thesis, the ''Goebel-Defense'' was fraudulent. Probably Goebel told his story in 1882 to present himself as experienced in the art of construction of electric lamps to promote his intended business. Patent attorneys and their technical consultants created the ''Goebel-Defense'' on base of this story.
Probably a biography of an inventor of electric light was constructed on top of the true biography of Henry Goebel. There is circumstantial evidence that falsification of written affidavits was part of the strategy of the counsels of the defense.
One curious matter is the name of Goebel's alleged teacher, Professor Münchhausen. Münchhausen is a rare family name in Germany and Münchhausen is the name of a literary figure in a collection of tales with title ''
The Surprising Adventures of Baron Munchausen'' of
Rudolf Erich Raspe (published 1785) and in another version of
Gottfried August Bürger
Gottfried August Bürger (31 December 1747 – 8 June 1794) was a German poet. His ballads were very popular in Germany. His most noted ballad, ''Lenore (ballad), Lenore'', found an audience beyond readers of the German language in an English l ...
(published 1786), a popular book in Germany; a man telling lies and incredible stories. A thesis on this is, that Henry Goebel, an old man, was under pressure of lawyers to provide affidavits and got pangs of conscience and this was his way to indicate the story was untrue. In the culture of Germany there is a close association of "Münchhausen" and "untrue, telling lies".
So-called ''Goebel Original Lamps'' are in the archives of the
Henry Ford Museum,
Dearborn. A technical examination with today's methods of science to establish, if possible, a final truth on the production year of the lamps and to clear up technical points of dispute in the litigations did not take place yet.
The ''Göbel-Legend''
Franklin Leonard Pope was a close friend of
Thomas Alva Edison
Thomas Alva Edison (February11, 1847October18, 1931) was an American inventor and businessman. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions ...
but later he was in quarrel with him.
He was an important man with a good reputation in the field of electricity; in 1886 he was the President of the ''American Institute of Electrical Engineers''.
In January 1893 Franklin Pope wrote an article published on the head page of the ''Electrical Engineer'' titled ''The Carbon Filament Lamp of 1859—The Story of an Overlooked Invention.'' In this article Franklin Pope credited the invention of the practical incandescent light bulb to Henry Goebel. Furthermore, he supported the ''Goebel-Defense'' at court providing affidavits.
Probably his relationship to Thomas Edison was the motivation of Franklin Pope.
The reputation of Franklin Pope and his article in ''The Electrical Engineer'' is the reason for the existing view in some countries that Henry Goebel developed a carbon filament lamp many years before Thomas Edison did it. ''The Electrical Engineer'' is available in the libraries of many technical universities. Franklin Pope's article was interpreted as a reliable source as well in the year of publishing as in later years. In 1893 his article was the source for reports about the Goebel-Story of newspapers in the US and in Europe.
As a matter of fact there is a lack of convincing evidence for the information about the lamps of Henry Goebel given by Franklin Pope in his article. This was the result of the litigations (motions for a preliminary injunction) in three cases in 1893 and 1894.
In a dissertation published 2007 it is stated, that the article was part of the fraudulent ''Goebel-Defense'' and the intention was to produce credibility for the Goebel-Story and sympathy for Henry Goebel, an "underdog" who anticipated the famous Thomas Edison. According to this view, Franklin Pope was a fraudulent acting consultant of the ''Goebel Defense''.
Franklin Pope wrote a book titled ''Evolution of the Electric Incandescent Lamp''. In the 2nd Edition of this book, published 1894 one year after his article about Henry Goebel in the ''Electrical Engineer'' of January 1893, Henry Goebel is not mentioned.
In the case ''Edison Electric Light Co.'' vs. ''Columbia Incandescent Lamp Co.'' Judge Moses Hallett denied the granting of a preliminary injunction. His opinion was, that a final hearing with all witnesses at court was necessary. Several magazines and newspapers stated that Judge Hallett believed Goebel's lamp preceded Edison's. In Germany the opinion of Judge Hallett was reported to be a final decision in the case. Sometimes it wasn't realized that the litigations were three independent cases with the same counsels of the defense using the same arguments. Due to this erroneous view the later decision of Judge Hallett was reported as a decision of a higher court in the same case. That are misstatements of Judge Hallett's decision, and the source of the legend that the priority of Henry Goebel for the invention of the practical incandescent light bulb was established at court.
After his death, Henry Goebel had been forgotten for 30 years in Germany. In the year 1923 the story of an important national inventor was created; the report of Franklin Pope was the main source.
[Hermann Beckmann: ''Die erste elektrische Glühlampe.'' In: ''ETZ Elektrotechnische Zeitschrift – Organ des VDE'', No. 47/48, November 29, 1923, pp. 1031–1034] Some other countries adapted the story from Germany in the 20th century. Additional misstatements became part of some versions of the legend. For example, some versions of the legend describe the first Goebel lamps as bottle-lamps. But Henry Goebel said that he had melted the glass of Eau-de-Cologne-Bottles with a blowpipe to produce the all-glass-envelope of his very first lamps in the 1850s.
Different views became obvious due to the internet and some projects in the US and in Germany started investigations in the year 2000 and later. As a result, the assumption of Goebel lamps prior to 1880 without any doubt was named a legend.
US-Patents granted to Henry Goebel
*Patent 47632, ''Hemmer for Sewing Machines'', May 9, 1865.
*Patent 252.658 "Vacuum Pump (Improvement of the Geissler-System of vacuum pumps", January 24, 1882
[Goebel's patent 252658 „Vacuum Pump" ](_blank)
/ref>
*Patent 266.358 "Electric Incandescent Lamp (sockets to connect the filament of carbon and the conducting wires)", October 24, 1882[Goebel's patent 266358 „Electric Incandescent Lamp"](_blank)
/ref>
See also
* List of German inventors and discoverers
Notes
References
Bibliography
* Hans-Christian Rohde: ''Die Göbel-Legende – Der Kampf um die Erfindung der Glühlampe.'' Zu Klampen, Springe 2007, (German, dissertation, research work on the biography of Henry Goebel, analysis of all documents of the ''Goebel-Defense'' available in National Record Administrations of the USA) The author explains his thesis, the Goebel claims were fraudulent.
* Decisions of the courts concerning the ''Goebel-Defense'' published in the ''Federal Reporter
The ''Federal Reporter'' () is a case law reporter in the United States that is published by West Publishing and a part of the National Reporter System. It begins with cases decided in 1880; pre-1880 cases were later retroactively compiled b ...
'' volumes f1.54, f1.56, f1.57, f1. 60, f1.61 und f1.65:
*
Edison Electric Light v. Beacon vol. 54, pg. 678
*
Edison Electric Light v. Columbia vol. 56, pg. 496
*
Edison Electric Light v. Electric, Oconto vol. 57, pg. 616
*
Electric, Oconto v. Edison Electric Light appeal vol. 61, pg. 834
*
Edison Electric Light v. Philadelphia Trust vol. 60, pg. 397
*
Philadelphia Trust v. Edison Electric Light appeal vol. 65, pg. 551
* Reports about the ''Goebel-Defense'' are available in many issues of ''The Electrical World'' and ''The Electrical Engineer'' in 1893 and 1894.
* Frank Dittmann: ''Heinrich Goebel – Aufstieg und Fall einer deutschen Legende.'' In: ''Technikgeschichte.'' 74, 2 (2007): 149–160, (Heinrich Goebel - rise and fall of a German legend.)
External links
* ttp://www.kundn.de/wp-content/uploads/2016/04/HMS-2_Kunden.jpg Goebel Stamp 2004, Germany, designed by Stefan Klein and Olaf Neumann
{{DEFAULTSORT:Gobel, Heinrich
1818 births
1893 deaths
Burials at Green-Wood Cemetery
American electrical engineers
German electrical engineers
19th-century American inventors
German emigrants to the United States
People from the Kingdom of Hanover
Engineers from Hanover