Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6640903 | Forming a wellbore casing while simultaneously drilling a wellbore | Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, Robert Donald Mack +1 more | 2003-11-04 |
| 6604763 | Expandable connector | Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, Richard Carl Haut +2 more | 2003-08-12 |
| 6557640 | Lubrication and self-cleaning system for expansion mandrel | Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Reece E. Wyant, Lev Ring +4 more | 2003-05-06 |