Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656209 | Process for manufacture of Fresnel lenses | Volker Benz, Martin Berkenkopf, Udo Fischer, Michael Meier-Kaiser | 1997-08-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656209 | Process for manufacture of Fresnel lenses | Volker Benz, Martin Berkenkopf, Udo Fischer, Michael Meier-Kaiser | 1997-08-12 |