Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D870867 | Smart toilet lid | Ningning Li, Lei Zhang, Jian-Ping Wang, Ze Chen, Lei Liu | 2019-12-24 |
| 10386274 | Plug-in air quality detector, control method and control device | Ningning Li, Lei Zhang | 2019-08-20 |