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 |
| 4881702 | Readily convertible aircraft passenger seats Aircraft passenger seat frames (60, 62, 220, 222 and 224) having legs (54, 56, 210, 212) fixed in place in the aircraft and with the seat frames. Each seat frame has generally horizontal supporting members (66, 68, 74, 76) having their opposite ends secur... | 11/21/1989 |
