Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364971 | Waterproof photographic paper and method of producing same | Wieland Sack, Ferenc Kertesz | 1982-12-21 |
| 4352861 | Photographic paper base with improved durability | Walter von Meer, Uwe Jensen | 1982-10-05 |
| 4309486 | Electrostatic recording material | Wieland Sack, Ferencz Kertesz | 1982-01-05 |