Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061456 | Chamfered edge gage cutters and drill bits so equipped | Suresh G. Patel, Danny E. Scott | 2011-11-22 |
| 8020641 | Drill bit with continuously sharp edge cutting elements | Robert M. Welch, Eric E. McClain | 2011-09-20 |
| 8006785 | Casing and liner drilling bits and reamers | Jack T. Oldham, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2011-08-30 |