Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6353799 | Method and apparatus for determining potential interfacial severity for a formation | David A. Curry, Leroy W. Ledgerwood, III, Craig H. Cooley | 2002-03-05 |
| 5592995 | Earth-boring bit having shear-cutting heel elements | Danny E. Scott, Rudolf Carl Pessier, Matthew R. Isbell, Alain Besson | 1997-01-14 |
| 5460233 | Diamond cutting structure for drilling hard subterranean formations | Craig H. Cooley, Gordon A. Tibbitts | 1995-10-24 |