Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7681668 | Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor | John H. Stevens, James L. Duggan, Redd H. Smith | 2010-03-23 |
| 6450271 | Surface modifications for rotary drill bits | Gordon A. Tibbitts, Danny E. Scott, James L. Overstreet, Terry J. Kolterman, Chih Lin +1 more | 2002-09-17 |