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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| Number | Title | Issue Date |
| 7445374 | Two-state chronograph with switching means The invention concerns a chronograph watch movement, comprising a chronograph mechanism, including: a chronograph gear-train comprising first (40) and second (38) wheels completing a revolution in sixty seconds and a revolution in a fraction of an hour... | 11/04/2008 |
| 7184369 | Date indicator mechanism for watch movement Embodiments of the present disclosure relate to a timepiece and a mechanism to be used with the timepiece for indicating the date and the day of the present time. In one embodiment, a timepiece may include a dial, indications of seven days of a week inscribed on the... | 02/27/2007 |
| 6805482 | Operation level indicator device This invention has for object to propose an operation level indicator device for watches with double spring barrels, both those with manual winding and those with automatic winding. This scope is reached by an operation level device, having two spring barrels... | 10/19/2004 |
