Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8309018 | Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies | Redd H. Smith, John H. Stevens, James L. Duggan, Nicholas J. Lyons, Jimmy W. Eason +2 more | 2012-11-13 |
| 7776256 | Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies | Redd H. Smith, John H. Stevens, James L. Duggan, Nicholas J. Lyons, Jimmy W. Eason +2 more | 2010-08-17 |