Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7963348 | Expandable earth boring apparatus using impregnated and matrix materials for enlarging a borehole | Tommy Laird | 2011-06-21 |
| 7954564 | Placement of cutting elements on secondary cutting structures of drilling tool assemblies | Wei Tang, Gordon Ray Whipple, Tommy Laird, Gail Nelson | 2011-06-07 |