Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5446508 | Progressive power lens | — | 1995-08-29 |
| 4307945 | Progressively varying focal power opthalmic lens | Wiktor J. Rupp | 1981-12-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5446508 | Progressive power lens | — | 1995-08-29 |
| 4307945 | Progressively varying focal power opthalmic lens | Wiktor J. Rupp | 1981-12-29 |