Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697462 | Earth-boring bit having improved cutting structure | Robert E. Grimes, Christopher J. Rohmer | 1997-12-16 |
| 5695018 | Earth-boring bit with negative offset and inverted gage cutting elements | Matthew R. Isbell | 1997-12-09 |
| 5655612 | Earth-boring bit with shear cutting gage | Robert E. Grimes, Danny E. Scott | 1997-08-12 |
| 5592995 | Earth-boring bit having shear-cutting heel elements | Danny E. Scott, Matthew R. Isbell, Nigel Charles Meany, Alain Besson | 1997-01-14 |