Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626251 | 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 | 2003-09-30 |
| 6543312 | 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 | 2003-04-08 |
| 6540033 | 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 | 2003-04-01 |