Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7040424 | Drill bit and cutter having insert clusters and method of manufacture | Zhou Yong, Peter Davies, Ernest L. Buford | 2006-05-09 |
| 6601475 | Hardfaced drill bit structures and method for making such structures | Peter Davies, Dennis Bond, Cary A. Roth | 2003-08-05 |