Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460631 | Drill bits with reduced exposure of cutters | Mark W. Dykstra, William Heuser, Michael L. Doster, Jack T. Oldham, Terry D. Watts +3 more | 2002-10-08 |
| 6419032 | Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations | Eric C. Sullivan, Scott Ray Schmidt, Don Q. Nguyen, Glenn R. Zadrapa, Chih Lin | 2002-07-16 |