Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803151 | Photographic material for the silver dye bleach process comprising an AZO dye, capable of laking, in gelatine | Rolf Steiger | 1989-02-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803151 | Photographic material for the silver dye bleach process comprising an AZO dye, capable of laking, in gelatine | Rolf Steiger | 1989-02-07 |