Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4549469 | Hydraulic ram | Klaus-Dieter Reddig, Heinz Hessel | 1985-10-29 |
| 4523512 | Telescopic support props for mineral mining | Heinz Hessel | 1985-06-18 |
| 4465407 | Fixing bridge | Friedrich Eggenstein, Gunter Terhorst | 1984-08-14 |
| 4457212 | Hydraulic ram | Eberhart Unger, Herbert Heitkamp, Heinz Hessel, Manfred Lagodka | 1984-07-03 |
| 4449859 | Mineral mining installation | Gunter Terhorst, Harry Rosenberg, Friedrich Eggenstein | 1984-05-22 |
| 4379424 | Devices for limiting the stroke of a hydraulic ram used in mining apparatus | Harry Rosenberg, Friedrich Eggenstein, Gunter Terhorst | 1983-04-12 |
| 4227833 | Mineral mining installation | Friedrich Eggenstein | 1980-10-14 |