Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6269925 | Viscous coupling with a volumetric-flow setting means | — | 2001-08-07 |
| 5090542 | Torsional oscillation damper | — | 1992-02-25 |
| 4809833 | Fluid friction clutch | Dieter Neugebauer, Peter Rossmanek | 1989-03-07 |
| 4732249 | Fluid friction clutch | — | 1988-03-22 |
| 4685549 | Temperature-dependently controllable fluid friction clutch | Werner Gob, Oswald Reis | 1987-08-11 |
| 4676355 | Fluid friction clutch | Werner Gob, Dieter Neugebauer | 1987-06-30 |
| 4665694 | Fluid friction coupling | — | 1987-05-19 |
| 4662495 | Fluid-friction coupling for a cooling fan of an internal combustion engine | — | 1987-05-05 |
| 4287735 | Key assembly for coded security system | Rupert Stangl | 1981-09-08 |
| 4280118 | Key-controlled electromagnetic operating mechanism for a lock and the like | Volker Eibl, Hans Fliege | 1981-07-21 |
| 4274080 | Magnetic security system | — | 1981-06-16 |