Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7739778 | High-performance cutting and turning machine and method for machining particularly spectacle lenses | Udo Fiedler, Karl-Heinz Tross, Steffen Wallendorf, Holger Schaefer | 2010-06-22 |
| 6394892 | Device for machining optical workpieces | Joachim Diehl, Holger Schäfer | 2002-05-28 |