Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10161122 | Twin water-drainage valve inner core tube starting apparatus | — | 2018-12-25 |
| 10132067 | Major water leak prevention apparatus for water inlet valve | Zipeng Zhang | 2018-11-20 |
| 10041240 | Minor water leak prevention apparatus for water inlet valve | Zipeng Zhang | 2018-08-07 |