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 |
| 7337759 | Engine The invention involves an engine that the cylinder block contains a coupled piston formed by a main piston, an external piston. The external piston is sleeved outside of the main piston and uses the rods on the two sides to connect to the heart-shape groove on the t... | 03/04/2008 |
| 5277155 | System for achieving four-stroke cycle in an internal combustion engine with a single rotation of the crankshaft A system for achieving a four-stroke cycle with a single rotation of a crankshaft in an internal combustion engine having a crank, a crank pin freely rotatable in a slide block of a runner 40. The runner 40 pivots on a pin rigidly attached to the bottom o... | 01/11/1994 |
