Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460631 | Drill bits with reduced exposure of cutters | William Heuser, Michael L. Doster, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2002-10-08 |
| 6443249 | Rotary drill bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics | Christopher C. Beuershausen, Roger Fincher, Roland Illerhaus, Steve R. Matson, James A. Norris +2 more | 2002-09-03 |
| 6408958 | Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped | Matthew R. Isbell, Rudolf Carl Pessier, Michael L. Doster, William Heuser | 2002-06-25 |
| 6397958 | Reaming apparatus and method with ability to drill out cement and float equipment in casing | Christopher S. Charles, William Gregory Presley, Sean K. Berzas, Douglas J. Bobrosky, Mark E. Morris +2 more | 2002-06-04 |