Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813063 | Photographic cassette | Even P. Carmichael, John J. Niedospial, Jr., Roger G. Covington | 1989-03-14 |
| 4807271 | Film sheet presence indicating mechanism for a photographic cassette | Roger G. Covington, Evan P. Carmichael, John J. Niedospial, Jr. | 1989-02-21 |