Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4964610 | Manual blowout preventer with invertible rams | Glenn R. Davis | 1990-10-23 |
| 4919456 | Union for pipe or tree with metal and resilient seals | — | 1990-04-24 |
| 4844210 | Line clamp | — | 1989-07-04 |
| 4825953 | Well servicing system | Peter Cowan | 1989-05-02 |
| 4821799 | Grease injection control system | — | 1989-04-18 |