Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10143369 | Method for representing optotypes, optotype representation, associated use and image output device | Fritz Passmann | 2018-12-04 |
| 4955712 | Multifocal lens | Rudolf Barth, Gunther Guilino | 1990-09-11 |