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(d) - data for 1836 include 599 patents issued prior to July 4, the effective date of the 1836 patent law (e) - "Patents", as used in this column, refers to "patents for inventions", also known as "utility" patents Data Sources (a) - recent statistics are obtained from the report, U.S. Patent Statistics Report, U.S. Patent and Trademark Office ...
AJ Aubrey Patents Description City Filed from Patent Number Date Issued Improved Safety for breakdown guns Hopkinton, MA: 859477: July 9, 1907 Sight For Firearms Meriden, CT: 839535: December 25, 1906 Sight For Firearms Meriden, CT: 835091: November 6, 1906 Automatic Shell-Ejector for Firearms Meriden, CT: 887569: May 12, 1908 Fore-Stock ...
Early variations marked with patent dates May 14 Aug 6 '89, April 2 '95, April 7 '96; later variations removed patent dates and marked caliber on the barrel. Later smokeless powder variations can be identified by a cartridge marking on the left of the barrel. Mfg. 1896–1940. Premier Model.22 Rimfire 7-shots, .32 S&W 5-shots. Small frame ...
The delay was attributed by spokesmen for the Patent Office to a combination of a sudden increase in business method patent filings after the 1998 State Street Bank decision, the unfamiliarity of patent examiners with the business and financial arts (e.g., banking, insurance, stock trading etc.), and the issuance of a number of controversial ...
As Samuel Colt's patent on the revolver was set to expire in 1856, Horace Smith and Daniel B. Wesson were researching a prototype for a metallic cartridge revolver. When they discovered that a former Colt employee named Rollin White held the patent for a "Bored-through" cylinder, a component needed for this new invention, the two partners approached White to manufacture a newly designed ...
Perky received United States Patent Number 548,086, dated October 15, 1895. The biscuits proved more popular than the machines, so Perky moved east and opened a bakery in Boston , Massachusetts, and then in Worcester, Massachusetts , in 1895, retaining the name of the Cereal Machine Company, and adding the name Shredded Wheat Company.
The Derwent World Patents Index (DWPI) is a database containing patent applications and grants from 44 of the world's patent issuing authorities. [1] [2]Compiled in English by editorial staff, the database provides a short abstract detailing the nature and use of the invention described in a patent and is indexed into alphanumeric technology categories to allow retrieval of relevant patent ...
The middle size is the No. 30 size, and all numbers with the 30 in them have a chuck shank size of 9/32" (7mm) diameter. The biggest size is the No. 31, and all numbers with 31 in them have a chuck diameter of 5/16" (8mm) diameter. A '1' in front of the number denotes a return spring fitted.