Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6640913 | Drill bit with canted gage insert | Alan W. Lockstedt, Gary R. Portwood | 2003-11-04 |
| 6527068 | Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance | Amardeep Singh, Sujian Huang | 2003-03-04 |