Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342732 | Photographic high contrast silver halide materials | Julia Pich | 1994-08-30 |
| 5298362 | Photographic high-contrast silver halide materials | David Beaumond, Nicholas A. Pightling | 1994-03-29 |