Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11890714 | Remanufacturing method of drill | Chia-Li Tao, Li-Yi CHAO, Chen-Kuang Sun, Cheng-Chia Lee, Ming Zhao | 2024-02-06 |
| 9630261 | Drill bit structure | Shih-Feng Chiu, Feng-Yu Lin, Ming Zhao | 2017-04-25 |