Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079431 | Drill bit having rotational cutting elements and method of drilling | Craig H. Cooley, Jeffery B. Lund | 2011-12-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079431 | Drill bit having rotational cutting elements and method of drilling | Craig H. Cooley, Jeffery B. Lund | 2011-12-20 |