Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830954 | Color photographic negative film | — | 1989-05-16 |
| 4820616 | Color photographic recording material | Manfred Becker, Heinrich Odenwalder, Hans-Joerg Metz | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830954 | Color photographic negative film | — | 1989-05-16 |
| 4820616 | Color photographic recording material | Manfred Becker, Heinrich Odenwalder, Hans-Joerg Metz | 1989-04-11 |