Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7167689 | Crystal for a telephone watch The telephone watch includes a crystal (1) including a keyboard (2) formed in particular of a plurality of capacitive sensors (3) disposed under the crystal. This crystal includes a thick zone (4) at its center and a thinned zone (5 | 01/23/2007 |
| 6636457 | Clock movement with a display for world time zones A clock movement with a display for world time zones comprises a power source, a second counter, a minute counter, an hour counter, and a time zone display. The time zone display further comprises an intermediate base, a time zone adjustable ring, and a d... | 10/21/2003 |
| 4308604 | Globe clock A clock for indicating the different times at different places in the world, comprises a globe and a dial ring rotatable in an annular groove formed around the inside of the globe at its equatorial region. The dial ring is rotated around the globe by a cl... | 12/29/1981 |
| 4307458 | Watch for displaying multiple world times The watch has a component in which a plurality of different times corresponding to different world time zones are displayed simultaneously. In one embodiment, the times are designated on an endless belt which is moved in increments under a window. In anot... | 12/22/1981 |
