Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066084 | Drilling apparatus with reduced exposure of cutters and methods of drilling | Mark W. Dykstra, William Heuser, Michael L. Doster, Theodore E. Zaleski, Jr., Terry D. Watts +3 more | 2011-11-29 |
| 8006785 | Casing and liner drilling bits and reamers | L. Allen Sinor, Eric E. McClain, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more | 2011-08-30 |
| 7954570 | Cutting elements configured for casing component drillout and earth boring drill bits including same | Eric E. McClain, John C. Thomas, Sarvesh Tyagi, Lester I. Clark, William Heuser | 2011-06-07 |