Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8122975 | Annulus pressure control drilling systems and methods | Gary Belcher, Adrian Steiner, David J. Brunnert, Darcy Nott, Richard Todd +2 more | 2012-02-28 |
| 7836973 | Annulus pressure control drilling systems and methods | Gary Belcher, Adrian Steiner, David J. Brunnert, Darcy Nott, Richard Todd +2 more | 2010-11-23 |
| 6790367 | Method and apparatus for separating and measuring solids from multi-phase well fluids | David Speed, Peter Stefureak | 2004-09-14 |