Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7051990 | Blowout preventer and movable bonnet support | Eric Trevor Ensley, James D. Brugman | 2006-05-30 |
| 7044430 | Lock bars for blowout preventer | James D. Brugman, Dean Allen Bennett | 2006-05-16 |
| 6779543 | BOP operating system with quick dump valve | F. Harold Hollister, Jason Post Curtiss, III | 2004-08-24 |
| 6655405 | BOP operating system with quick dump valve | F. Harold Hollister, Jason Post Curtiss, III | 2003-12-02 |