Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686232 | Composition for developing an exposed photographic product having improved stability in air | Jacques Roussilhe | 1997-11-11 |
| 5656415 | Composition for developing an exposed photographic product having improved stability in air | Jacques Roussilhe | 1997-08-12 |