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Burr Puzzle
A burr puzzle is an interlocking puzzle consisting of notched sticks, combined to make one three-dimensional, usually symmetrical unit. These puzzles are traditionally made of wood, but versions made of plastic or metal can also be found. Quality burr puzzles are usually precision-made for easy sliding and accurate fitting of the pieces. In recent years the definition of "burr" is expanding, as puzzle designers use this name for puzzles not necessarily of stick-based pieces. History The term "burr" is first mentioned in a 1928 book by Edwin Wyatt, but the text implies that it was commonly used before. The term is attributed to the finished shape of many of these puzzles, resembling a seed burr. The origin of burr puzzles is unknown. The first known record appears in a 1698 engraving used as a title page of Chambers's Cyclopaedia. Later records can be found in German catalogs from the late 18th century and early 19th century. There are claims of the burr being a Chinese inventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burr Puzzles
Burr may refer to: Places *Burr (crater), on the Jovian moon Callisto *Burr, Minnesota, an unincorporated community, United States *Burr, Missouri, an unincorporated community, United States * Burr, Nebraska, a village, United States *Burr, Saskatchewan, a hamlet in Canada *Burr, Texas, an unincorporated community, United States *Burr, West Virginia, an unincorporated community, United States *Burr Point, the easternmost point of mainland Ireland *Cape Burr, headland in South Australia *Mount Burr, South Australia, a town and mountain in South Australia People *Burr (surname) *Burr (given name) Arts and entertainment * ''Burr'' (novel), a book about Aaron Burr by Gore Vidal *Burr Redding, a fictional character in the television series ''Oz'' Other uses *Burr (edge), deformation of metal wherein a raised edge forms on a metal part which has been machined *Burr (cutter), a small cutter used in rotary tools for metalworking *Bur or burr, a spiky seed pod *Burl, burr in British Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private law and the patent holder mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
