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 |
| 5794710 | Lightweight adjustable track "power dozer" This invention is directed to a lightweight adjustable track earth moving device. More particularly this invention is directed to an improved efficient light-weight adjustable track earth moving device which can be attached at the front end of an endless ... | 08/18/1998 |
| 4358905 | Power dozer This invention is directed to a unique method of moving earth and an earth moving device which can be attached at the front end of an endless track vehicle and used for moving earth into a ditch or excavation. The apparatus for moving earth comprises: (a)... | 11/16/1982 |
