Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10478873 | Ventilation cabinet | Hongzheng Ruan, Bingli Lu | 2019-11-19 |
| 10357810 | Steady flow structure and a ventilation apparatus having said steady flow structure | Hongzheng Ruan | 2019-07-23 |