Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6579498 | Implantable blood glucose sensor system | — | 2003-06-17 |
| 4969549 | Data-storing tokens and apparatus for handling data-storing tokens and coins | — | 1990-11-13 |
| 4937436 | Magnetically encoded cards | Douglas A. Jenkins | 1990-06-26 |
| 4928000 | Method and apparatus for communication for a data-storing token | Alan J. Ruddell | 1990-05-22 |
| 4926996 | Two way communication token interrogation apparatus | Adrian Lewis | 1990-05-22 |
| 4674618 | Tokens and token handling devices | Adrian Lewis | 1987-06-23 |
| 4611205 | Data collection system | — | 1986-09-09 |
| 4597506 | Beverage dispensing machine | Edward C. Horton | 1986-07-01 |
| 4491140 | Coin handling apparatus | Alan J. Ruddell | 1985-01-01 |