Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766859 | Wellbore liner system | David M. Haugen | 2004-07-27 |
| 6070665 | Wellbore milling | Teme Forrest Singleton, Andrew Mark Berry, John D. Roberts, William Alan Spielman, David M. Haugen +3 more | 2000-06-06 |
| 6024168 | Wellborne mills & methods | William A. Blizzard, Jr., Thurman B. Carter, Guy L. McClung, III | 2000-02-15 |