Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420391 | Screen tensioning arrangement | — | 1983-12-13 |
| 4269567 | Mud degasser pump | Victor Q. Phillips, Phil H. Griffin | 1981-05-26 |
| 4253530 | Method and system for circulating a gas bubble from a well | William A. Rehm, Woodrow E. Renfro | 1981-03-03 |