Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6397958 | Reaming apparatus and method with ability to drill out cement and float equipment in casing | Christopher S. Charles, William Gregory Presley, Douglas J. Bobrosky, Mark W. Dykstra, Mark E. Morris +2 more | 2002-06-04 |
| 6354387 | Nozzle orientation for roller cone rock bit | Thomas M. Harris, Leroy W. Ledgerwood, III, Brian C. Wiesner, Brian Baker | 2002-03-12 |