Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948779 | Cutting roller for a continuously operating surface miner | Alexander Ehler, Gunter Kunze, Volkmar Schrader, Burkhard Petack | 2005-09-27 |
| 6224163 | Milling roller module for a surface miner | Gerhard Nies, Dieter Hoffmann, Volkmar Schrader, Thomas Stenzel, Manfred John +3 more | 2001-05-01 |