Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239342 | Optical focusing system with two ellipsoidal mirrors | Helmut Knutti | 1980-12-16 |
| 4185892 | Apparatus for the adjustment of two intersecting optical axes | — | 1980-01-29 |