Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7484572 | Roller cone drill bit with debris flow paths through associated support arms | Mark P. Blackman, Mark E. Williams, William C. Saxman, Michael B. Crawford, Gerald L. Pruitt +1 more | 2009-02-03 |
| 6227316 | Jet bit with variable orifice nozzle | — | 2001-05-08 |