Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5211250 | Method for stabilizing boreholes | Lee E. Whitebay, James A. Wingrave | 1993-05-18 |
| 4957174 | Method of controlling lost circulation in well drilling | Donald L. Whitfill, Terry S. Cantu, Matthew C. Sooter | 1990-09-18 |