Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4693517 | Cutter for gouging ore or rock from mine faces | Martin Eisenbeis, Hans Krummenauer | 1987-09-15 |
| 4668018 | Rotary cutter with spray nozzles for removal of ores from mine faces | Jean Demoulin, Reinhard Schiel | 1987-05-26 |
| 4647112 | Rotary cutter for gouging out ore from mine faces | Jean Demoulin, Reinhard Schiel | 1987-03-03 |