Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6332827 | Apparatus for machining glass lenses | Lutz Gottschald | 2001-12-25 |
| 5904613 | Additional, friction-wheel-driven grinding spindle for bevelling the edges of spectacle lenses on a spectacle-lens-edging machine | — | 1999-05-18 |