Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5351768 | Earth-boring bit with improved cutting structure | Danny E. Scott, Matthew R. Isbell, Rudolf Carl Pessier | 1994-10-04 |
| 5323865 | Earth-boring bit with an advantageous insert cutting structure | Matthew R. Isbell, Rudolf Carl Pessier | 1994-06-28 |
| 5287936 | Rolling cone bit with shear cutting gage | Danny E. Scott | 1994-02-22 |