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 |
| 6917013 | Copying welding equipment In the tracking welder, left and right side wheels are supported rotatably by a pair of bearing units that are pivotally attached on a carriage, and this carriage is provided with a driving source for running the carriage, a transmission system for transmitting a ro... | 07/12/2005 |
| 5355762 | Extemporaneous playing system by pointing device A computer music playing system of the invention permits setting parameters before playing, sound generation control, musical interval control, and special control during playing by merely operating a hand held type position input device. System operabili... | 10/18/1994 |
