Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7984761 | Openhole perforating | Frank F. Chang, Lawrence A. Behrmann, Keng Seng Chan | 2011-07-26 |
| 7909115 | Method for perforating utilizing a shaped charge in acidizing operations | Brenden M. Grove, Lawrence A. Behrmann | 2011-03-22 |