Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877383 | Device having a sealed control opening and an orbiting valve | — | 1989-10-31 |
| 4875841 | Staggered rotor gerotor device | — | 1989-10-24 |
| 4872819 | Rotary gerotor hydraulic device with fluid control passageways through the rotor | — | 1989-10-10 |
| 4858714 | Hydrostatic steering device | — | 1989-08-22 |
| 4859160 | Cutaway rotor gerotor device | — | 1989-08-22 |
| 4818200 | Hydrostatic steering device having the control valve within the rotor | — | 1989-04-04 |