Issued Patents 2011
Showing 1–2 of 2 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., Jack T. Oldham +3 more | 2011-11-29 |
| 7954380 | Rotary drill bits and systems for inspecting rotary drill bits | Jeffrey B. Lund, Nicholas J. Lyons, Eric C. Sullivan | 2011-06-07 |