Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6502745 | Pre-paid card system and method | Charles J. Stimson | 2003-01-07 |
| 5721768 | Pre-paid card system and method | Charles J. Stimson | 1998-02-24 |
| 5577109 | Pre-paid card system and method | Charles J. Stimson | 1996-11-19 |
| 5511114 | Telephone pre-paid calling card system and method | Charles J. Stimson | 1996-04-23 |