Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6926488 | Horizontal drill pipe racker and delivery system | Andrew Brooks, Michael Keen | 2005-08-09 |
| 5831353 | Modular linear motor and method of constructing and using same | William M. Hallidy | 1998-11-03 |
| 5252043 | Linear motor-pump assembly and method of using same | John S. Stiebel, Frank L. Unmack | 1993-10-12 |
| 5193985 | Pump control system for a downhole motor-pump assembly and method of using same | Nelson Escue, Howard C. Hornsby | 1993-03-16 |
| 5049046 | Pump control system for a downhole motor-pump assembly and method of using same | Nelson Escue, Howard C. Hornsby | 1991-09-17 |
| 4367796 | Blowout preventer and guideline handling | — | 1983-01-11 |