Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4738525 | Transparency film assemblage and roller assembly for use therewith | — | 1988-04-19 |
| 4716092 | Transparency film assemblage and roller assembly for use therewith | — | 1987-12-29 |
| 4591255 | Apparatus for moving coated section of sheet material into and out of engagement with film frame | John B. Morse | 1986-05-27 |
| 4238144 | Audio tape free loop control arrangement for multipurpose audio-visual film cassette | William Keefe | 1980-12-09 |
| 4212528 | Photographic film cassette having pressure pad and nozzle arrangement | — | 1980-07-15 |
| 4203655 | Tapered pressure pad to prevent film scratching | Joseph A. Stella | 1980-05-20 |