Issued Patents 2005
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6976541 | Liner hanger with sliding sleeve valve | David Paul Brisco, Edwin Zwald, Chan Daigle, Gregory Marshall Noel, William J. Dean +6 more | 2005-12-20 |
| 6968618 | Expandable connector | David Paul Brisco, R. Bruce Stewart, Lev Ring, Richard Carl Haut, Robert Donald Mack +2 more | 2005-11-29 |
| 6966370 | Apparatus for actuating an annular piston | David Paul Brisco, Lev Ring, Michael Bullock | 2005-11-22 |
| 6892819 | Forming a wellbore casing while simultaneously drilling a wellbore | David Paul Brisco, R. Bruce Stewart, Lev Ring, Andrei Gregory Filippov, Alan B. Duell | 2005-05-17 |
| 6857473 | Method of coupling a tubular member to a preexisting structure | David Paul Brisco, Lev Ring, Michael Bullock | 2005-02-22 |