Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668938 | Cup packer | Randolph J. Sheffield, David Milton Eslinger, Jose Hurtado | 2003-12-30 |
| 6655461 | Straddle packer tool and method for well treating having valving and fluid bypass system | David Milton Eslinger, Randolph J. Sheffield | 2003-12-02 |