Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6991525 | Method and device for the surface machining of workpieces composed of non-brittle materials in optical lens manufacturing and tool for this purpose | Joachim Diehl, Karl-Heinz Tross | 2006-01-31 |
| 6227952 | Apparatus for creating a concave surface from a spectacle blank | Joachim Diehl, Karl-Heinz Tross | 2001-05-08 |
| 5938381 | Method and tool for creating a concave surface from a spectacle blank | Joachim Diehl, Karl-Heinz Tross | 1999-08-17 |