Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4290738 | Steering valve with spring torsion rod | Karl-Heinz Liebert | 1981-09-22 |
| 4258902 | Steering valve with annular sealing element for radial annular gap | Karl-Heinz Liebert | 1981-03-31 |
| 4258752 | Control valve with two rotary valve elements supported in a housing and acted upon axially by pressure | Karl-Heinz Liebert | 1981-03-31 |
| 4237773 | Pressure medium controller for motor vehicle steering systems | Karl-Heinz Liebert, Josef Deppenbrock, Kurt Leberfinger | 1980-12-09 |
| 4184560 | Two-circuit steering arrangement for motor vehicles | — | 1980-01-22 |