Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6651758 | Rolling cone bit with elements fanned along the gage curve | James C. Minikus | 2003-11-25 |
| 6612384 | Cutting structure for roller cone drill bits | Amardeep Singh, Sujian Huang | 2003-09-02 |
| 6601660 | Cutting structure for roller cone drill bits | Amardeep Singh, Sujian Huang | 2003-08-05 |
| 6561291 | Roller cone drill bit structure having improved journal angle and journal offset | — | 2003-05-13 |