Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4443135 | Control apparatus | Klaus Beckmann, Walter Weirich | 1984-04-17 |
| 4428710 | Manipulator with a swivel jib | Rudolf Betzing, Volker Betzing, Ulrich Betzing, Klaus Betzing | 1984-01-31 |
| 4391470 | Method of, and apparatus for, winning mineral material | Helmut Langenberg, Heinz Weinhold | 1983-07-05 |
| 4382619 | Hydraulic coupling device | — | 1983-05-10 |
| 4382618 | Hydraulic coupling device | — | 1983-05-10 |
| 4273383 | Mineral winning machines | — | 1981-06-16 |
| 4251110 | Mineral mining installation | Klaus Beckmann | 1981-02-17 |