Issued Patents 2002
Showing 1–1 of 1 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, Sean K. Berzas, Douglas J. Bobrosky, Mark W. Dykstra +2 more | 2002-06-04 |