Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618017 | Hydraulic auxiliary power steering for motor vehicles | Erwin Wiedemann | 1986-10-21 |
| 4553389 | Hydrostatic auxiliary steering apparatus | Werner Tischer, Rolf Fassbender | 1985-11-19 |
| 4553390 | Hydrostatic steering arrangement | Werner Tischer, Rolf Fassbender | 1985-11-19 |
| 4495769 | Booster power steering | Werner Tischer, Rolf Fassbender | 1985-01-29 |
| 4466243 | Hydrostatic power steering system with curved valve return springs | Rolf Fassbender, Werner Tischer | 1984-08-21 |
| 4395877 | Hydrostatic steering system for motor vehicles | Werner Tischer | 1983-08-02 |
| 4355505 | Rotatable controller valve | Werner Tischer | 1982-10-26 |
| 4354350 | Hydrostatic auxiliary power steering | Werner Tischer | 1982-10-19 |
| 4344283 | Hydrostatic auxiliary power steering | Werner Tischer, Christoph Deppenbrock | 1982-08-17 |
| 4295805 | Hydraulic rotary toothed piston engine with flow through the toothed gaps | — | 1981-10-20 |
| 4290738 | Steering valve with spring torsion rod | Werner Tischer | 1981-09-22 |
| 4258902 | Steering valve with annular sealing element for radial annular gap | Werner Tischer | 1981-03-31 |
| 4258752 | Control valve with two rotary valve elements supported in a housing and acted upon axially by pressure | Werner Tischer | 1981-03-31 |
| 4237773 | Pressure medium controller for motor vehicle steering systems | Werner Tischer, Josef Deppenbrock, Kurt Leberfinger | 1980-12-09 |
| 4221159 | Pressure medium control device for hydrostatic steering systems of motor vehicles | — | 1980-09-09 |
| 4184332 | Hydrostatic two-circuit steering arrangement | — | 1980-01-22 |