Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6056481 | Method and device for monitoring the load on hydraulic powered shield supports for underground mining | Walter von der Linden, Wilfried Weigel | 2000-05-02 |
| 4946316 | Method and device for moving a shield-type support trestle | Herman-Josef Schulze-Heiming | 1990-08-07 |
| 4773795 | Roof cap assembly with supporting cylinders for roof support mechanism | Heinz-Gerd Schlutz | 1988-09-27 |
| 4749311 | Foot element and cooperable strut element for use in a roof support mechanism | Udo Hofmann | 1988-06-07 |
| 4586851 | Levelling ram for roof-shield mine support systems | — | 1986-05-06 |
| 4557635 | Shield-type support frame | Winfried Hachenberg | 1985-12-10 |
| 4222686 | Mine roof support | Gunter Bell | 1980-09-16 |