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 |
| D658964 | Pocket tool with control panel | 05/08/2012 |
| 7631752 | Card-shaped storage case for articles of daily use and/or consumer articles The invention relates to a card-shaped storage case (1) made of metal or plastic with at least one internal storage compartment (8) for at least one article, which is defined by a base plate (6) and at least in sections by a cover plate (7 | 12/15/2009 |
| 7373681 | Pocket tool The invention specifies a pocket tool, particularly a pocket knife (1) or plate-like tool card, comprising a housing (2) with at least one receiving area (10), and at least two functional components (11) movable from a storage position wi... | 05/20/2008 |
| 7344023 | Transparent operational tools carrier An operational tools carrier, such as a pocketknife or a tool card, having a portion formed from a transparent or translucent material has been found to have various functional benefits in addition to the clear ornamental effects of transparency/translucenary. A poc... | 03/18/2008 |
| 7059741 | Pocket tool A pocket tool with a housing body with two oppositely lying side faces bounding at least certain regions thereof, and at least one housing area between the side faces, and an implement displaceable out of a stowed position inside the housing area and an operating po... | 06/13/2006 |
| 6413173 | Multiple purpose golf tool The invention relates to an especially handy and user-friendly multiple purpose tool for the sport of golf, which is light yet solidly built. Operation of the pitch fork is done with one hand, as well as the removal and insertion of the ball marker. The b... | 07/02/2002 |