Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870785 | Lens holder for an apparatus for grinding the edges of a lens | — | 1989-10-03 |
| 4841677 | Device for disengaging a suction mechanism from a lens | — | 1989-06-27 |
| 4837978 | Machine for grinding the edges of lenses | Gunter Barwasser | 1989-06-13 |