Issued Patents 2011
Showing 1–1 of 1 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, Jack T. Oldham, Terry D. Watts +3 more | 2011-11-29 |