Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302815 | Light protection apparatus comprising an electrically controllable light protection filter element | — | 1994-04-12 |
| 4620322 | Electro-optic welding lens assembly | Rolf Bruhin | 1986-11-04 |