Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10132067 | Major water leak prevention apparatus for water inlet valve | Yongmao Liu | 2018-11-20 |
| 10041240 | Minor water leak prevention apparatus for water inlet valve | Yongmao Liu | 2018-08-07 |