Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867317 | Positioning device | Willi Wildemann, Helmut Morgen, Castor Fuhrmann, Jurgen Kessler, Herbert Freitag | 1989-09-19 |
| 4785921 | Temperature-compensating hydraulic positioner | Hans-Josef Hosan | 1988-11-22 |
| 4750594 | Seal for pneumatic, hydraulic or hydropneumatic units | Manfred Zirbs | 1988-06-14 |
| 4650165 | Gas spring | — | 1987-03-17 |
| 4647026 | Pneumatic or hydropneumatic tension spring | Wolfgang Luhn | 1987-03-03 |