Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5105936 | Chain-drum mechanism | Horst Stapper | 1992-04-21 |
| 4639169 | Mineral mining installation | Rudiger Kirchbrucher, Michael Preuschoff | 1987-01-27 |
| 4589701 | Cutting machine | Klaus Beckmann | 1986-05-20 |
| 4526495 | Mine roof support assembly | Burckhardt Elsner, Rudiger Kirchbrucher | 1985-07-02 |
| 4518284 | Mine roof supports | Rudiger Kirchbrucher, Klaus D. Pohlmann | 1985-05-21 |
| 4449860 | Mine roof supports | Burckhard Elsner, Rudiger Kirchbrucher | 1984-05-22 |
| 4448263 | Drilling apparatus | Rudiger Kirchbrucher, Burckhard Elsner | 1984-05-15 |
| 4447174 | Cap positioning mechanism | Gerd Dunkel, Gunter Lagodka, Rudiger Kirchbrucher | 1984-05-08 |
| 4427321 | Mineral mining installation | Walter Weirich, Harry Rosenberg | 1984-01-24 |
| 4402634 | Mineral mining installation | Gerhard Merten, Horst Schlusener, Herbert Beyer | 1983-09-06 |
| 4401399 | Two part mine roof support unit | Burckhard Elsner, Gerd Dunkel | 1983-08-30 |
| RE31346 | Advance mechanism for a mine roof support assembly | Willy Heyer, Lubomir Plevak, Jurgen Dodt | 1983-08-16 |
| 4391181 | Hydraulic control systems for mining apparatus | Walter Weirich, Michael Dettmers, Harry Rosenberg | 1983-07-05 |
| 4390308 | Advance mechanism for a mine roof support assembly | Rudiger Kirchbrucher, Gunter Lagodka, Klaus D. Pohlmann | 1983-06-28 |
| 4375904 | Longwall mineral winning machine with adjustable cutting jet | Klaus Beckmann | 1983-03-08 |
| 4349229 | Longwall mineral mining installation | Herbert Beyer | 1982-09-14 |
| 4327946 | Apparatus for controlling the position of a mineral mining machine | Rudiger Kirchbrucher | 1982-05-04 |
| 4324510 | Apparatus for supporting a mine roof support assembly | Hans-Joachim Dreher | 1982-04-13 |
| 4307981 | Mineral mining installation | Walter Weirich, Harry Rosenberg | 1981-12-29 |
| 4217067 | Mine roof support assembly | Gunter Lagodka, Harry Rosenberg, Gerd Dunkel | 1980-08-12 |
| 4195953 | Advance mechanism for a mine roof support assembly | Willy Heyer, Lubomir Plevak, Jurgen Dodt | 1980-04-01 |
| 4184791 | Mine roof support assembly | Burghardt Elsner, Gunter Lagodka | 1980-01-22 |