U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.

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Class 33/23.1 - Telautograph


Subclass of Class 33 - Geometrical instruments
Definition: Subject matter wherein the tracing member and the scribing
No. of patents: 1
Last issue date: 05/31/1977


NumberTitleIssue Date
4026644Device for inscribing additional information on microfilms
A device for inscribing additional informations on microfilms of a construction, wherein informations already recorded on microfilms are projected on an image screen by means of an enlarging and projecting device, additional informations to be entered on ...
05/31/1977
 
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