Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864618 | Automated transaction system with modular printhead having print authentication feature | Stephen D. Bristow | 1989-09-05 |
| 4802218 | Automated transaction system | Stephen D. Bristow | 1989-01-31 |