Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4339530 | Developer mixture for developing exposed light-sensistive copying layers | Gerhard Sprintschnik, Gerhard Buhr | 1982-07-13 |
| 4337307 | Light-sensitive diazo composition and material with branched polyurethane resin | — | 1982-06-29 |