Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460636 | Drill bit inserts with variations in thickness of diamond coating | Zhou Yong, Nathan R. Anderson, J. Daniel Belnap, Chris E. Cawthorne, Ronald K. Eyre +4 more | 2002-10-08 |