Issued Patents 2016
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9512680 | Coring bit to whipstock systems and methods | John E. Campbell, Charles H. Dewey, Robert Utter, Praful C. Desai | 2016-12-06 |
| 9347268 | System and method to facilitate the drilling of a deviated borehole | Charles Grigor, Joseph M. Crow | 2016-05-24 |
| 9228406 | Extended whipstock and mill assembly | John E. Campbell, Shelton W. Alsup | 2016-01-05 |