U.S. patents available from 1976 to present.
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Icon_funbox Did You Know...

...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 114/224 - Caulking, paying, etc.


Subclass of Class 114 - Ships
Definition: Devices for caulking or making the seams watertight and
No. of patents: 2
Last issue date: 09/10/1991


NumberTitleIssue Date
5046450Apparatus for interior coating of cavities
An apparatus for the interior coating of cavities, particularly of an automobile body, comprising a spray gun having a nozzle probe plug-in coupling and spray shot trigger means and comprising nozzle probes connected to the spray gun, each thereof being a...
09/10/1991
4686925Rotary boat repair apparatus
An apparatus for repairing boat hulls comprising a rack mounted for rotation about a horizontal axis. A beam is cantilevered outwardly from the rack, and a hoist mechanism is mounted for travel on the beam. A boat resting on a trailer is moved partially w...
08/18/1987
 
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