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 |
| 4816018 | Ultrasonic probe tip An ultrasonic probe tip is provided with improved characteristics for removing material during surgery on a cataract or the like, and reducing the removed material into smaller particles. The tip includes a body section and a cutting section with a passag... | 03/28/1989 |
| 4808153 | Device for removing plaque from arteries A hollow member is made from a material such as titanium with properties of vibrating longitudinally. The interior surface of the hollow member is preferably quite smooth. At least one member is disposed on the hollow member and is provided with propertie... | 02/28/1989 |
| 4691725 | Lens cleaner A housing supports a tray for slidable movement of the tray within the housing. The tray and the housing may be paramagnetic. The tray is shaped to define at least one cup for receiving a contact lens and cleaning fluid. The tray may be supported on a res... | 09/08/1987 |
