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 |
| 5327400 | Time piece with lunar phase and tides display The present invention has for its object a watch movement more particularly a wrist watch, a chronograph watch or a pocket watch which comprises a time display formed by a dial and hands and which comprises a tide indicator constituted by a tides disk 16 ... | 07/05/1994 |
