Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10006252 | Drill bit including button array having different radii extending from center of head section | Jung-Woo Cho, Dae Young Shin, Jin YANG, Ki Beom Kwon, Chang-Heon Song +1 more | 2018-06-26 |