Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938120 | Device for influencing the reset value of a valve | Manfred Weyand | 1990-07-03 |
| 4875659 | Servo-valve | Manfred Weyand | 1989-10-24 |
| 4638650 | Rotary drive lock | — | 1987-01-27 |
| 4482127 | Valve structure | — | 1984-11-13 |
| 4309021 | Valve structure | — | 1982-01-05 |
| 4274434 | Automatic low-friction check valve | — | 1981-06-23 |