Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10465775 | Cam follower with polycrystalline diamond engagement element | David P. Miess, Michael V. Williams | 2019-11-05 |
| D863919 | Directional drilling assembly | Edward C. Spatz, Michael R. Reese, David P. Miess | 2019-10-22 |
| 10190366 | Hybrid drill bits having increased drilling efficiency | Anton F. Zahradnik, Robert J. Buske, Rudolf Carl Pessier, Don Q. Nguyen, Karlos B. Cepeda +5 more | 2019-01-29 |