Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| RE33846 | Electrohydraulic valve system | Edward H. Fletcher | 1992-03-17 | |
| 4799645 | Pilot operated hydraulic control valve | Gregory E. Sparks | 1989-01-24 | $5,945,000 |
| 4679765 | Low leakage orifice-controlled poppet valve | Rohn Lee Olson | 1987-07-14 | $8,055,000 |
| 4506700 | Poppet valve with float function | — | 1985-03-26 | $1,894,000 |
| 4461314 | Electrohydraulic valve | — | 1984-07-24 | $9,242,000 |
| 4437385 | Electrohydraulic valve system | Edward H. Fletcher | 1984-03-20 | $6,477,000 |
| 4419642 | Solenoid with saturable element | Kenneth J. Stoss, Gregory E. Sparks | 1983-12-06 | $3,933,000 |