Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592649 | Photographic roller copying apparatus | Friedbert Freitag, Erich Nagel, Bernd Payrhammer, Wolfgang Zahn | 1986-06-03 |
| 4508224 | Container for photographic films and prints | Klaus Weber, Ferdinand Schaner | 1985-04-02 |
| 4260245 | Apparatus for making test exposures on marginal portions of photographic films or the like | — | 1981-04-07 |
| 4239385 | Photographic copying machine with means for varying exposure across the surface of the original copied | — | 1980-12-16 |