Issued Patents All Time
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, Danny E. Scott, Alan J. Massey | 1997-09-02 |
| 5445231 | Earth-burning bit having an improved hard-faced tooth structure | Danny E. Scott, Rudolf Carl Pessier | 1995-08-29 |
| 4969378 | Case hardened roller cutter for a rotary drill bit and method of making | Eric F. Drake | 1990-11-13 |