Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8025107 | Reamer with polycrystalline diamond compact inserts | Kristian S. Drivdahl, Michael D. Rupp | 2011-09-27 |
| 7905161 | Process of drill bit manufacture | Drew Mark Butler, Todd A. Nevenner | 2011-03-15 |