Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6966377 | Providing a low pressure condition in a wellbore region | Ashley Bernard Johnson, Lawrence A. Behrmann, Wenbo Yang, Ian C. Walton | 2005-11-22 |
| 6874579 | Creating an underbalance condition in a wellbore | Ashley Bernard Johnson, Lawrence A. Behrmann, Wenbo Yang | 2005-04-05 |