Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5385171 | Two-stage hydraulic valves | — | 1995-01-31 |
| 5079498 | Digital pulse-width-modulation generator for current control | Jack T. D'Aeth | 1992-01-07 |
| 4862920 | Spool for a spool valve and method of producing same | — | 1989-09-05 |
| 4838298 | Hydraulic latch device | — | 1989-06-13 |
| 4785839 | Pilot valves for two-stage hydraulic devices | — | 1988-11-22 |
| 4719944 | Pilot valves for two-stage hydraulic devices | — | 1988-01-19 |