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 |
| 6702315 | Methods and apparatus for resisting gliding device runaway A braking feature is provided that can resist gliding board runaway, i.e., uncontrolled gliding without a rider, or other movement of a gliding board, e.g., a gliding device having no foot bindings. The braking feature may always be active to resist glidi... | 03/09/2004 |
| 4296840 | Tractor pull sled A tractor pull sled including a weighted pan movably supported on a frame intermediate the forward and rearward ends. The frame is supported by a plurality of ground engaging wheels, at least one of which is coupled to and actuates a pan support assembly ... | 10/27/1981 |