Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847645 | Image projectors with pivoting mirror in front screen projection system | Ronald B. Harvey | 1989-07-11 |
| 4843410 | Camera and projector alignment for front screen projection system | — | 1989-06-27 |
| 4832482 | Film transparency slide carrier and conveyor system for front screen projection system | — | 1989-05-23 |