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 |
| 4043321 | Arrangement for ultrasonic-echo encephalography An arrangement for effecting ultrasonic-echo encephalography, including at least two ultrasonic heads, as well as a recording arrangement for the ultrasonic waves which are received from the skull of a patient, and having at least one marking device assoc... | 08/23/1977 |
| 3978712 | Method and apparatus for testing wear, size and residual stress conditions Wheel testing apparatus according to the invention comprises at least one search unit positioned "in-track" replacing a portion of a rail so that the gauged wheels of a passing railroad train roll thereover. Each search unit has a thin vertical rail align... | 09/07/1976 |
| 3946377 | Method and apparatus to monitor conduction of sonic waves in an acoustically conductive medium To detect breakage of glass panes, panels of display cases, or movement in a room, ultrasonic waves, preferably in the order of from 120 kHz to 180 kHz, are transmitted to the sonically conductive medium (glass panes, plastic sheets, or into the air of th... | 03/23/1976 |
