Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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., Don Q. Nguyen, Glenn R. Zadrapa, Chih Lin | 2002-07-16 |