Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4496285 | Reciprocating drive and velocity control for long stroke well pumping unit | Weems D. Turner | 1985-01-29 |
| 4466488 | Position indicator for drill string compensator | Douglas W. J. Nayler, Gerald W. Gilson, Fred C. Tilker | 1984-08-21 |