Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300035 | Valve, actuator and control system therefor | John M. Saldivar, David R. Mefford, Frank J. Arriens, Daryl Ard, Anthony Laitkep +3 more | 2007-11-27 |
| 7021602 | Valve, actuator and control system therefor | John M. Saldivar, David R. Mefford, Frank J. Arriens, Daryl Ard | 2006-04-04 |
| 6986499 | Valve, actuator and control system therefor | John M. Saldivar, David R. Mefford, Frank J. Arriens, Daryl Ard | 2006-01-17 |
| 5615595 | Tandem cylinder control | — | 1997-04-01 |
| 5385167 | Value testing device | Charles D. Owen, Michael E. Rembert | 1995-01-31 |
| 5348271 | Locking device | Charles D. Owen, Michael E. Rembert | 1994-09-20 |
| 5329959 | Locking device | Charles D. Owen, Michael E. Rembert | 1994-07-19 |