Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10246863 | Drain valve for low-level water tank flushing | Fusheng Li | 2019-04-02 |
| 9487938 | Automatic protection device for a toilet inlet valve or drain valve | Xiping Li, Yuzhi Liu, Dongsheng Yao, Baojia Huang, Jianfu Wu | 2016-11-08 |