Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238330 | Displaceable mine roof support assemblies | Lubomir Plevak, Michael Schiller | 1993-08-24 |
| 5104267 | Roof supports for a mining installation | Fritz Kleibohmer, Ulrich Hilker | 1992-04-14 |
| 4571127 | Advance mechanism for mine roof support units | Gerhard Merten | 1986-02-18 |
| 4447174 | Cap positioning mechanism | Kunibert Becker, Gerd Dunkel, Rudiger Kirchbrucher | 1984-05-08 |
| 4390308 | Advance mechanism for a mine roof support assembly | Kunibert Becker, Rudiger Kirchbrucher, Klaus D. Pohlmann | 1983-06-28 |
| 4217067 | Mine roof support assembly | Harry Rosenberg, Kunibert Becker, Gerd Dunkel | 1980-08-12 |
| 4184791 | Mine roof support assembly | Kunibert Becker, Burghardt Elsner | 1980-01-22 |