Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812882 | Contrast monitor | Richard J. Brent | 1989-03-14 |
| 4812867 | Apparatus for processing an exposed photographic film wound on a spool | Richard J. Brent | 1989-03-14 |
| 4702582 | Processing device | Richard J. Brent | 1987-10-27 |
| 4678309 | Device for processing a role of exposed film coiled on a spool | Richard J. Brent | 1987-07-07 |
| 4678307 | Device for processing exposed photographic film coiled on a spool | Richard J. Brent, Ian B. Pilkington | 1987-07-07 |
| 4678308 | Processing device | Richard J. Brent | 1987-07-07 |
| 4664498 | Film-processing apparatus | Richard J. Brent | 1987-05-12 |
| 4593998 | Photographic enlarger | Richard J. Brent | 1986-06-10 |
| 4586803 | Developing drum | Ian B. Pilkington, Richard J. Brent | 1986-05-06 |
| 4440490 | Combined masking frame and photographic sheet material container | Michael H. Moore, George F. A. M. Turner | 1984-04-03 |
| 4274734 | Masking frame | — | 1981-06-23 |