Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11248418 | Drilling motor interior valve | David A. Barker | 2022-02-15 |
| 7631693 | Retrievable plug system and methods of use | Phillip Man Tong | 2009-12-15 |
| 7523792 | Method and apparatus for shifting speeds in a fluid-actuated motor | Peter Shwets, Nazeeh Melhem | 2009-04-28 |