Issued Patents 2016
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9371694 | Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore | David D. Hearn, Dan E. Venhaus, John G. Eller | 2016-06-21 |