Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252006 | Mine roof support | — | 1993-10-12 |
| 5238330 | Displaceable mine roof support assemblies | Gunter Lagodka, Michael Schiller | 1993-08-24 |
| RE31346 | Advance mechanism for a mine roof support assembly | Kunibert Becker, Willy Heyer, Jurgen Dodt | 1983-08-16 |
| 4325659 | Mineral mining installation | Walter Weirich | 1982-04-20 |
| 4266891 | Support assemblies for mine workings | Jurgen Dodt | 1981-05-12 |
| 4242014 | Pivot joint for underground mining installations | Jurgen Dodt | 1980-12-30 |
| 4231685 | Roof support unit | Harry Rosenberg | 1980-11-04 |
| 4195953 | Advance mechanism for a mine roof support assembly | Kunibert Becker, Willy Heyer, Jurgen Dodt | 1980-04-01 |
| 4187042 | Advance mechanism for a mine roof support unit | Jurgen Dodt | 1980-02-05 |