Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10428584 | Bit for drilling with casing or liner string and manufacture thereof | Gary M. Thigpen, Bruno Cuillier De Maindreville | 2019-10-01 |
| 10329843 | Fixed cutter drill bit having core receptacle with concave core cutter | Sebastien Reboul, Bruno Cuillier De Maindreville, Alfazazi Dourfaye | 2019-06-25 |