Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948779 | Cutting roller for a continuously operating surface miner | Alexander Ehler, Gunter Kunze, Burkhard Petack, Klaus Potenberg | 2005-09-27 |
| 6935443 | Mini disk bit | Alexander Ehler, Gunter Kunze | 2005-08-30 |
| 6276758 | Surface miner with tilting superstructure for depth control | Dieter Hoffmann, Thomas Stenzel, Hans-Joachim Schombel | 2001-08-21 |
| 6224163 | Milling roller module for a surface miner | Gerhard Nies, Dieter Hoffmann, Thomas Stenzel, Manfred John, Klaus Potenberg +3 more | 2001-05-01 |