Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10304638 | Medium voltage double power supply change-over switch with permanent magnet | Tiefeng Su | 2019-05-28 |
| 10176956 | Safety tripping device for a frame-type ACB drawer seat | Kerang Feng, Yu'e Zeng | 2019-01-08 |