Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887112 | Film cassette | John J. Niedospial, Jr., Mark D. Fraser | 1989-12-12 |
| 4848693 | Film cassette | — | 1989-07-18 |
| 4834306 | Film cassette | Mark D. Fraser | 1989-05-30 |
| 4832275 | Film cassette | — | 1989-05-23 |