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 |
| 7530355 | Mouth guard for braces The present invention provides an improved mouth guard (10) for braces having a U-shaped base portion (30) made from EVA or similar plastic having a melting point less than the boiling point of water, and an upper portion (20) extending generall... | 05/12/2009 |
| 7090597 | Hand shield for hockey stick The present invention provides a hand shield (10) adapted for use with a hockey stick. The hand shield includes a flexible shield portion (11) having a convex outer surface (12) and an opening configured to accommodate a portion of a hockey stic... | 08/15/2006 |
| 6932088 | Suction-fitted mouthguard A mouthguard (10) has a U-shaped base (11) having an upper surface (16) and a lower surface (18). An inner wall (19) extends upwardly from an inner margin of the base upper surface. An outer wall (21) extends upwardly from a... | 08/23/2005 |
| D492375 | Hockey stick | 06/29/2004 |
| 6280196 | Disposable tooth bleaching tray A tooth bleaching tray (20) broadly includes a U-shaped trough-like member (21) having a central arcuate portion (22) and having an extension portion (23, 24) continuing from either end thereof and terminating in a distal end (25, 26). The tray has an out... | 08/28/2001 |
