Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5664891 | Downhole bearing assembly which accommodates compressive and tensile axial | David Kutinsky, Raymond D. Livingstone | 1997-09-09 |
| 5125463 | Adjustable bent sub | Raymond D. Livingstone | 1992-06-30 |