Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 4247984 | Knife and chopper board combination A knife and chopper board combination is provided in which the knife is pivotally coupled to the board at its forward end to permit it to be turned about a vertical axis to various angular positions with respect to the top of the board and then turned abo... | 02/03/1981 |
