Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11480233 | Planetary speed-change mechanism | Li Yao, Chi-Chen Tien, Pei-Sheng Hsieh | 2022-10-25 |
| 11300183 | Structure of speed changer | Li Yao, Chi-Chen Tien, Pei-Sheng Hsieh | 2022-04-12 |