...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 7607179 | Shock-absorbing helmet A shock-absorbing helmet is disclosed to include a helmet body, which has a receiving space for receiving the user's head and a front open side, a facemask provided at the front open side of the helmet body, and a plurality shock absorbers affixed to the helmet body... | 10/27/2009 |