Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6213603 | Progressive ophthalmic lens | Helmut Altheimer, Gregor Esser, Herbert Pfeiffer, Rudolf Barth, Walter Haimerl | 2001-04-10 |
| 5854669 | Series of lenses | Helmut Altheimer, Norbert Awrath, Rudolf Barth, Peter Baumbach, Jochen Brosig +6 more | 1998-12-29 |