Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823952 | Structure for polycrystalline diamond insert drill bit body | Tommy G. Ray, Youhe Zhang | 2004-11-30 |
| 6808031 | Drill bit having large diameter PDC cutters | David Truax | 2004-10-26 |
| 6729420 | Multi profile performance enhancing centric bit and method of bit design | — | 2004-05-04 |
| 6684967 | Side cutting gage pad improving stabilization and borehole integrity | Peter Chan | 2004-02-03 |