Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8665537 | Modified retrofocus-type wide-angle lens | Stefan Roth | 2014-03-04 |
| 7102834 | Photographic objective of the modified double gauss type | — | 2006-09-05 |
| 6621986 | Optical lens arrangement | Holger Wiegand | 2003-09-16 |
| 6346981 | Lens testing device | Rolf Crema, Joachim Kuhn, Bernd Harand | 2002-02-12 |
| 5684625 | Illumination device for microscopes | Hans-Werner Stankewitz | 1997-11-04 |