Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10490363 | Vacuum switching apparatus and electrical contact therefor | Wangpei Li, Li Yu | 2019-11-26 |
| 9922777 | Vacuum switching apparatus and electrical contact therefor | Wangpei Li, Li Yu | 2018-03-20 |