Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6450271 | Surface modifications for rotary drill bits | Gordon A. Tibbitts, Danny E. Scott, James L. Overstreet, Terry J. Kolterman, James Andy Oxford +1 more | 2002-09-17 |
| 6419032 | Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations | Eric C. Sullivan, Theodore E. Zaleski, Jr., Scott Ray Schmidt, Don Q. Nguyen, Glenn R. Zadrapa | 2002-07-16 |