Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796860 | Valve spool detent | — | 1989-01-10 |
| 4736672 | Metered lockout valve | — | 1988-04-12 |
| 4723478 | Series self-leveling valve | Robert W. Calvert | 1988-02-09 |
| 4488476 | Marker control valve | Richard C. Putnam | 1984-12-18 |
| 4408518 | Series self-leveling valve | James P. Huebert | 1983-10-11 |