Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4529873 | Optical control circuit for electrochromic layers | Horst Ballmer | 1985-07-16 |
| 4266862 | Refractometer for the automatic objective determination of the refractive condition of an eye | Otto Trotscher | 1981-05-12 |
| 4240728 | Photographic camera shutter electromagnetic system for controlling photographic light admitted to camera | Horst Stacklies | 1980-12-23 |