Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5144275 | Positioning cylinder, especially for subterranean mining | Lothar Sebastian, Karl-Heinz Berger, Friedel Amling | 1992-09-01 |
| 4576524 | Rock anchor arrangement | Peter Heintzmann, Manfred Koppers, Karlheinz Bohnes | 1986-03-18 |