Issued Patents 1997
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678645 | Mechanically locked cutters and nozzles | Paul E. Pastusek | 1997-10-21 |
| 5671816 | Swivel/tilting bit crown for earth-boring drills | — | 1997-09-30 |
| 5666864 | Earth boring drill bit with shell supporting an external drilling surface | — | 1997-09-16 |
| 5651420 | Drilling apparatus with dynamic cuttings removal and cleaning | Craig H. Cooley | 1997-07-29 |
| 5605198 | Stress related placement of engineered superabrasive cutting elements on rotary drag bits | Evan C. Turner | 1997-02-25 |
| 5595254 | Tilting bit crown for earth-boring drills | — | 1997-01-21 |
| 5590729 | Superhard cutting structures for earth boring with enhanced stiffness and heat transfer capabilities | Craig H. Cooley, Wayne R. Hansen | 1997-01-07 |