Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5023923 | Programmable sensor aperture | M. Duane Sanner, Barry M. Wallace | 1991-06-11 |
| 4807287 | Document authentication method | Frank D. Tucker | 1989-02-21 |
| 4404649 | Document processing system | Willis D. Simpson, William J. Reid | 1983-09-13 |