Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5542485 | Earth-boring bit with improved cutting structure | Rudolf Carl Pessier, Danny E. Scott, Robert E. Grimes | 1996-08-06 |
| 5479997 | Earth-boring bit with improved cutting structure | Danny E. Scott, Robert E. Grimes, Rudolf Carl Pessier | 1996-01-02 |
| 5351768 | Earth-boring bit with improved cutting structure | Danny E. Scott, Robert E. Grimes, Rudolf Carl Pessier | 1994-10-04 |
| 5323865 | Earth-boring bit with an advantageous insert cutting structure | Rudolf Carl Pessier, Robert E. Grimes | 1994-06-28 |
| 5311958 | Earth-boring bit with an advantageous cutting structure | Rudolf Carl Pessier | 1994-05-17 |
| 4984643 | Anti-balling earth boring bit | Rudolf Carl Pessier | 1991-01-15 |