Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5226844 | Actuator for variable-pitch propeller | — | 1993-07-13 |
| 5178522 | Method and apparatus for supplying oil to a vacuum pump | Thomas Abelen, Lutz Arndt, Winfried Kaiser, Dieter Vorberg | 1993-01-12 |
| 5155908 | Method for assembling a one-piece rotor system and a pump ring for a two-stage vacuum pump | Lutz Arndt, Winfried Kaiser | 1992-10-20 |
| 5156532 | Rotary vane vacuum pump with shaft seal | Lutz Arndt, Dieter Vorberg | 1992-10-20 |
| 5073134 | Boat drive with adjustable pitch propeller | Urs Morgenthaler | 1991-12-17 |
| 5061212 | Ship drive with variable-pitch propeller | Urs Morgenthaler | 1991-10-29 |
| 4897056 | Propeller for water vehicle | — | 1990-01-30 |
| 4880402 | Method and apparatus for preventing the attachment of foreign bodies to controllable pitch propeller linkages of watercraft | — | 1989-11-14 |
| 4860969 | Airborne body | Josef Nagler, Utz-Udo Ahlers | 1989-08-29 |
| 4744727 | Controllable pitch propeller and watercraft drive | — | 1988-05-17 |
| 4599043 | Controllable pitch propeller and watercraft drive | — | 1986-07-08 |