Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663512 | Hardfacing composition for earth-boring bits | Kevin W. Schader, Ronald L. Jones, James L. Overstreet, Mou-Chih Lu, Alan J. Massey | 1997-09-02 |
| 5655612 | Earth-boring bit with shear cutting gage | Robert E. Grimes, Rudolf Carl Pessier | 1997-08-12 |
| 5592995 | Earth-boring bit having shear-cutting heel elements | Rudolf Carl Pessier, Matthew R. Isbell, Nigel Charles Meany, Alain Besson | 1997-01-14 |