Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6655478 | Fracture and wear resistant rock bits | Dah-Ben Liang, Paul E. Cox, John L. Williams | 2003-12-02 |
| 6640913 | Drill bit with canted gage insert | Alan W. Lockstedt, Scott D. McDonough | 2003-11-04 |
| 6561292 | Rock bit with load stabilizing cutting structure | — | 2003-05-13 |
| 6561293 | Cutter element with non-linear, expanded crest | James C. Minikus, Chris E. Cawthorne, Stephen C. Steinke, Gary E. Garcia, David P. Moran +1 more | 2003-05-13 |
| 6510909 | Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty | Gary E. Garcia, James C. Minikus, Per Ivar Nese, Dennis Cisneros, Chris E. Cawthorne | 2003-01-28 |