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 |
| 5521166 | Antiprogestin cyclophasic hormonal regimen The present invention is directed to cyclophasic hormonal regimens which comprise antiprogestin and progestin for human contraception whereby progestin is administered in the alternating presence and absence of an antiprogestin in effective amounts to upr... | 05/28/1996 |
