Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10661357 | Drill structure | Li-Yi CHAO, Feng-Yu Lin, Cheng-Chia Lee, Ming Zhao, Chun-Yu Chen | 2020-05-26 |
| 10596641 | Drill structure | Li-Yi CHAO, Feng-Yu Lin, Ming Zhao, Chun-Yu Chen | 2020-03-24 |