Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4192585 | Slide projector with automatic focusing system | Kurt Henkelmann | 1980-03-11 |
| 4181412 | Optical exposure measuring system for photographic cameras | Werner Holle | 1980-01-01 |