Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9941650 | Rotating mechanism and plug using same | Li-Wen Tien, Xue Liu | 2018-04-10 |
| 9716329 | Rotation element and safety plug with the rotation element | Li-Wen Tien, Xue Liu | 2017-07-25 |