Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 3939497 | Fastening means for hip joint prosthesis sockets A socket for hip joint prosthesis is secured to a cavity in the bone tissue by a series of radially arranged pegs which can be projected outwardly from the wall of the socket into the surrounding tissue by a central screw member which also has a self-tapp... | 02/24/1976 |
| 3939828 | Method and clasp for internal osseous fixation A clasp formed of spring material is Z-shaped in top plan and in side elevation shows two legs which converge downwardly at about a 15° angle, one leg depending from each end of the Z. In end elevation the legs are perpendicular to the horizontal portion... | 02/24/1976 |
