Issued Patents All Time
Showing 26–31 of 31 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 |
| 6745842 | Concentric casing jack | Mark Dunbar | 2004-06-08 |
| 6666274 | Tubing containing electrical wiring insert | — | 2003-12-23 |
| 4620461 | Screw driving tool | Franklin R. Wheelock | 1986-11-04 |
| 4294051 | Modular building system | — | 1981-10-13 |