Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9068402 | Drilling mud recovery system | Roger Boisjolie, David L. Gilmore, William F. Puccio | 2015-06-30 |
| 6719262 | Bidirectional sealing blowout preventer | Melvyn F. Whitby, Bolie C. Williams, III | 2004-04-13 |
| RE38249 | Rotating blowout preventer and method | James D. Brugman | 2003-09-16 |
| 5662171 | Rotating blowout preventer and method | James D. Brugman | 1997-09-02 |
| 5588491 | Rotating blowout preventer and method | James D. Brugman | 1996-12-31 |
| 5158264 | Parallel expanding gate valve | Tri C. Le, Scott K. Beall | 1992-10-27 |