Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890647 | Hydraulic control valve | Berthold Pfuhl, Volkmar Leutner | 1990-01-02 |
| 4478136 | Electrohydraulic control arrangement for hydrostatic machine | Joachim Heiser, Volkmar Leutner, Dieter Weigle | 1984-10-23 |
| 4266572 | Electrohydraulic directional control valve system | Manfred Hauser, Winfried Hommen, Klaus Sopha | 1981-05-12 |