Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4623026 | Method and apparatus of a self-aligning sleeve for the correction of the direction of deviated boreholes | William S. Brashear, Jr. | 1986-11-18 |
| 4501336 | Method and apparatus of a self-aligning sleeve for the correction of the direction of deviated boreholes | William S. Brashear, Jr. | 1985-02-26 |