Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117547 | Method of field retrofitting a heat releaseable weldment for manual opening jacks | — | 1992-06-02 |
| 5080125 | Heat releasable weldment for manual opening jacks and method of field retrofitting | — | 1992-01-14 |
| 4529330 | Cylinder connection | — | 1985-07-16 |
| 4491060 | Cylinder connection | — | 1985-01-01 |
| 4199131 | Actuator module for wireline cutting safety valve | Karl N. Tunstall, M. L. Warren | 1980-04-22 |