Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6615934 | PDC drill bit having cutting structure adapted to improve high speed drilling performance | — | 2003-09-09 |
| 6564886 | Drill bit with rows of cutters mounted to present a serrated cutting edge | Carl W. Keith, Stephen G. Southland | 2003-05-20 |