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 |
| 6832772 | Vehicle center section adjustable anti-roll bar An adjustable anti-roll bar having a single set of mounting apertures whose roll rate is adjusted in the middle of the anti-roll bar. The roll rate is determined by the location of the junction of one torsion member to another; that is, an outer torsion member to an... | 12/21/2004 |