Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688455 | Process for making a cellulose triacetate photographic film base | Randall J. Kehl | 1997-11-18 |
| 5686036 | Process for making a cellulose triacetate photographic film base | — | 1997-11-11 |
| 5633041 | Method of making photographic paper | — | 1997-05-27 |