Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7350874 | Method and device for extracting extraction products in underground mining | Reinhold Brüggemann, Detlef Hahn, Frank Fischer, Jorg Wirtz, Norbert Katthöfer +8 more | 2008-04-01 |