Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11357945 | Nasal pad for respiratory mask and respiratory mask | Zhi Zhuang | 2022-06-14 |
| 10953182 | Breathing mask | Zhi Zhuang | 2021-03-23 |
| 10314998 | Breathing mask | Zhi Zhuang | 2019-06-11 |