Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D322264 | Foldable portable overhead projector | — | 1991-12-10 |
| 4969733 | Foldable portable overhead projector | — | 1990-11-13 |
| 4331397 | Front/rear projection system | Brian E. Buck | 1982-05-25 |