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 |
| 5735742 | Gaming table tracking system and method A fully automated accounting system accurately and automatically monitors and records all gaming chip transactions in a casino. The system employs a gaming chip having a transponder embedded therein and has an ongoing and "on-command" ability to provide a... | 04/07/1998 |
| 5651548 | Gaming chips with electronic circuits scanned by antennas in gaming chip placement areas for tracking the movement of gaming chips within a casino apparatus and method A method of tracking movement of gaming chips in casino comprising gaming chips each having an electronic circuit which transmits information, and antennas located at gaming chip placement areas. When gaming chips are placed on a first gaming chip placeme... | 07/29/1997 |
