Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6108751 | Single wire data communication method | Robert D. Lee, Stephen M. Curry, Michael L. Bolan, Hal Kurkowski, Francis A. Scherpenberg +1 more | 2000-08-22 |
| 5974504 | Metal token having units of value stored therein using a single wire communication method | Robert D. Lee, Stephen M. Curry, Michael L. Bolan, Hal Kurkowski, Francis A. Scherpenberg +1 more | 1999-10-26 |
| 5864872 | Single wire communication system | Robert D. Lee, Stephen M. Curry, Michael L. Bolan, Hal Kurkowski, Francis A. Scherpenberg +1 more | 1999-01-26 |
| 5587955 | Electronic token | Robert D. Lee, Stephen M. Curry, Michael L. Bolan, Hal Kurkowski, Francis A. Scherpenberg +1 more | 1996-12-24 |