Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9556601 | Base connection device used to change a flapper drain valve to a barrel drain valve | Baojia Huang, Yuzhi Liu | 2017-01-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9556601 | Base connection device used to change a flapper drain valve to a barrel drain valve | Baojia Huang, Yuzhi Liu | 2017-01-31 |