Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002040 | System and method for controlling flow in a wellbore | Dwayne May, Paul G. Goughnour, David Biddick, Russell A. Johnston | 2011-08-23 |
| 7866401 | Safety valve for use in an injection well | — | 2011-01-11 |