Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666266 | Screw-driven wellhead isolation tool | Phillip M. Starr, Lee W. Stepp | 2003-12-23 |
| 6666275 | Bridge plug | Kenneth G. Neal, Kevin T. Berscheidt, Ronald L. Hinkie, Loren Swor, Brian K. Wilkinson | 2003-12-23 |