Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912298 | Method for producing a marking on a spectacle lens | Hermann Schurle | 1990-03-27 |
| 4690524 | Multifocal spectacle lens having a large near-vision part | Siegfried Korn | 1987-09-01 |
| 4673249 | Drive for a prismatic compensator | Horst Schneider, Wilhelm Schmidt | 1987-06-16 |
| 4619504 | Ophthalmic lens with a marking and method of producing the marking | Bernd Kratzer, Hermann Schurle | 1986-10-28 |
| 4247179 | Multifocal spectacle lens | Siegfried Korn | 1981-01-27 |