Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877722 | Color photographic recording material developable by heat | Manfred Peters, Kaspar Wingender, Thomas Kaluschke, Sieghart Klotzer | 1989-10-31 |
| 4820616 | Color photographic recording material | Reinhart Matejec, Heinrich Odenwalder, Hans-Joerg Metz | 1989-04-11 |