Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4697497 | Hydraulic amplifier valve assembly | Rolf Warnecke | 1987-10-06 |
| 4638719 | Unbalanced hydraulic amplifier valve assembly | Rolf Warnecke, Heinz Ruhmer | 1987-01-27 |
| 4516470 | Unbalanced hydraulic amplifier valve assembly | Rolf Warnecke, Heinz Ruhmer | 1985-05-14 |