Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7040424 | Drill bit and cutter having insert clusters and method of manufacture | Zhou Yong, Peter Davies, Hubert W. Penka, Jr. | 2006-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7040424 | Drill bit and cutter having insert clusters and method of manufacture | Zhou Yong, Peter Davies, Hubert W. Penka, Jr. | 2006-05-09 |