Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5218994 | Arrangement having a pneumatic control valve with a housing closed on all sides | — | 1993-06-15 |
| 4794841 | Pneumatic drive mechanism for positioning apparatus | Lothar Kemmler | 1989-01-03 |
| 4697484 | Rotating drilling head | Gerhard Klee, Wilfried Gerk | 1987-10-06 |