Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5193985 | Pump control system for a downhole motor-pump assembly and method of using same | Nelson Escue, Vance E. Bolding | 1993-03-16 |
| 5049046 | Pump control system for a downhole motor-pump assembly and method of using same | Nelson Escue, Vance E. Bolding | 1991-09-17 |
| D309445 | Water vehicle | Robert J. Murphy | 1990-07-24 |
| 4862817 | Water vehicle | Robert J. Murphy | 1989-09-05 |