Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9803881 | Method for controlling air output volume | Ge Hu | 2017-10-31 |
| 9547974 | Device for detecting blockage of air filter mesh | Jizhong Wang, Yiqiao Zhou, Zheng Zhang, Hairong Sun, Yong Zhao | 2017-01-17 |