...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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| Application No. | Application Title | Issue Date |
| 20100236371 | CUTTING FRAME OF HIGH CUTTING EFFICENCY Disclosed herein is a cutting frame including a plurality of cutters for cutting one or more kinds of rectangular unit pieces having a relatively small size from a rectangular base material at a predetermined inclination, the cutters being mounted or formed in the cutti... | 09/23/2010 |
| 20100068608 | BATTERY MODULE OF IMPROVED SAFETY AGAINST EXTERNAL IMPACT Disclosed herein is a battery module including at least one battery cell constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case such that electrode leads of the electrode assembly protrude outside, w... | 03/18/2010 |
| 20090239154 | Non-aqueous electrolyte and secondary battery using the same Disclosed is an electrolyte for a secondary battery comprising an electrolyte salt and an electrolyte solvent, the electrolyte further comprising both a cyclic diester compound and a sulfinyl group-containing compound. Also, disclosed is an electrode having a solid elec... | 09/24/2009 |