Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D928931 | Filtration and sterilization device for respiratory droplet | Yuansheng Zhou, Xuehua Huang, Qing Xiang, Zhijie Li | 2021-08-24 |
| 10973723 | Dental treatment machine with a retractable backrest for children | Sheng Lin Li, Yuansheng Zhou, Xuehua Huang | 2021-04-13 |