Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6899188 | Down hole drilling assembly with concentric casing actuated jet pump | Jimmie Josh Renfro | 2005-05-31 |
| 6877571 | Down hole drilling assembly with independent jet pump | Jimmie Josh Renfro | 2005-04-12 |