Issued Patents 2011
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8051929 | Core drill bits with enclosed fluid slots | K. Shayne Drivdahl | 2011-11-08 |
| D647115 | Drill bit waterway | Cody A. Pearce, Christian M. Lambert | 2011-10-18 |
| D647114 | Drill bit with tapered waterway | Cody A. Pearce, Christian M. Lambert | 2011-10-18 |
| 8025107 | Reamer with polycrystalline diamond compact inserts | Kristian S. Drivdahl, Erik M. Gaugh | 2011-09-27 |
| 8006783 | Helical drilling apparatus, systems, and methods | Christopher L. Drenth | 2011-08-30 |
| 7975785 | Drilling systems including fiber-containing diamond-impregnated cutting tools | Kristian S. Drivdahl | 2011-07-12 |
| 7958954 | Drill bits with enclosed slots | K. Shayne Drivdahl | 2011-06-14 |
| 7918288 | Drill bits with enclosed fluid slots and method | K. Shayne Drivdahl | 2011-04-05 |
| 7909119 | Drill bits with notches and enclosed slots | K. Shayne Drivdahl | 2011-03-22 |
| 7874384 | Drill bits with increased crown height | K. Shayne Drivdahl | 2011-01-25 |
| D630656 | Drill bit | Christian M. Lambert | 2011-01-11 |