Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7484577 | Bit leg outer surface hardfacing on earth-boring bit | James L. Overstreet, John F. Bradford, Caleb A. Rickabaugh | 2009-02-03 |
| 7343990 | Rotary rock bit with hardfacing to reduce cone erosion | Rudolf Carl Pessier, James L. Overstreet, Russell S. Nibogie | 2008-03-18 |
| 7240746 | Bit gage hardfacing | James L. Overstreet, Rudolf Carl Pessier, Jeremy K. Morgan | 2007-07-10 |
| 4745981 | Hydraulic impact tool | — | 1988-05-24 |
| 4724911 | Hydraulic impact tool | — | 1988-02-16 |
| 4448270 | Variable diameter earth boring bit | — | 1984-05-15 |