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 |
| 5442261 | Energy saving lamp controller An energy saving lamp controller includes a current sensor together with a controlled circuit producing a timer signal in response to increased current drawn by a lighting system. The timer responds to the control signal by producing a fixed duration oper... | 08/15/1995 |
| 5252894 | Energy saving flourescent lamp controller An energy saving fluorescent lamp controller includes a current sensor together with a controlled circuit producing a timer signal in response to increased current drawn by a fluorescent lighting system. The timer responds to the control signal by produci... | 10/12/1993 |
