Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10316589 | Hybrid drill bit and design method | Anton F. Zahradnik, Rudolf Carl Pessier, Don Q. Nguyen, Matthew J. Meiners, Michael S. Damschen +3 more | 2019-06-11 |
| 10190366 | Hybrid drill bits having increased drilling efficiency | Anton F. Zahradnik, Robert J. Buske, Rudolf Carl Pessier, Don Q. Nguyen, Michael S. Damschen +5 more | 2019-01-29 |