Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5802744 | Method of and an apparatus for reconstructing railway track systems | Werner Kampmann, Klaus Linde, Werner Schmidt, Fritz Schmidt, Franz Oppel +1 more | 1998-09-08 |
| 4558629 | Hydraulic control means for pipe thrust-jacking apparatus | Eberhart Unger | 1985-12-17 |
| 4457212 | Hydraulic ram | Eberhart Unger, Heinz Hessel, Karl-Heinz Plester, Manfred Lagodka | 1984-07-03 |
| 4439063 | Hydraulic control means | — | 1984-03-27 |
| 4432665 | Tunnel driving apparatus | Dieter Stuckmann | 1984-02-21 |
| 4412758 | Hydraulic control means | Walter Hohn | 1983-11-01 |
| 4391553 | Hydraulic control systems for and methods of controlling the operation of tunnelling apparatus | Walter Weirich | 1983-07-05 |
| 4343512 | Cutter drive regulation apparatus for a tunnelling machine | Werner Dehmel | 1982-08-10 |
| 4224004 | Knife shield | — | 1980-09-23 |