Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4595266 | Multiple projection optics slide projection apparatus using a circular slide tray, having fixed-position slide gates | — | 1986-06-17 |
| 4466716 | Slide projector having two image-projection systems which operate with a single slide tray | Milo G. Kramer, Albert S. Ballard | 1984-08-21 |
| 4389103 | Slide projector having two image-projection systems which operate with a single slide tray | — | 1983-06-21 |