Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4724866 | Speed control valve | Howard J. Bates, Willard D. Childs, Douglas W. J. Nayler | 1988-02-16 |
| 4674920 | Subsea well template levelling system | A. Michael Regan | 1987-06-23 |
| 4461448 | Well blowout preventer, and packing element | Wai J. Huey, Fernando Murman | 1984-07-24 |
| 4452421 | Well blowout preventer, and packing element | Wai J. Huey, Fernando Murman | 1984-06-05 |
| 4447037 | Well blowout preventer, and packing element | Wai J. Huey, Fernando Murman | 1984-05-08 |