Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5777715 | Low vision rehabilitation system | Allen Blumenthal | 1998-07-07 |
| 4963962 | Optical surveillance assembly and camera | Walter T. Sandin | 1990-10-16 |
| 4222662 | Access control system | — | 1980-09-16 |