Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4189227 | Illuminating system for photographic color enlargement or copying | — | 1980-02-19 |
| 4188125 | Apparatus for the determination of the color composition of the printing light in a photographic enlarger | Wolfgang Kapfinger | 1980-02-12 |