Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6056056 | Whipstock mill | Douglas Glenn Durst, Robert E. Robertson, Thurman B. Carter, Charles W. Pleasants, William A. Blizzard, Jr. +2 more | 2000-05-02 |
| 5887655 | Wellbore milling and drilling | David M. Haugen, William A. Blizzard, Jr., Mark W. Schnitker, Steve R. Delgado, Thurman B. Carter +4 more | 1999-03-30 |
| 5787978 | Multi-face whipstock with sacrificial face element | Thurman B. Carter, Charles W. Pleasants | 1998-08-04 |