Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443246 | Long barrel inserts for earth-boring bit | Brian C. Wiesner, George E. Dolezal, Matthew R. Isbell, James Lawrence Jacobsen, Brian Baker | 2002-09-03 |
| 6443249 | Rotary drill bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics | Christopher C. Beuershausen, Mark W. Dykstra, Roger Fincher, Roland Illerhaus, Steve R. Matson +2 more | 2002-09-03 |
| 6408958 | Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped | Matthew R. Isbell, Michael L. Doster, Mark W. Dykstra, William Heuser | 2002-06-25 |
| 6401844 | Cutter with complex superabrasive geometry and drill bits so equipped | Michael L. Doster | 2002-06-11 |