Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D977052 | Swimming ring | Hao Chen, Mingji Dai | 2023-01-31 |
| D973820 | Swimming ring | Hao Chen, Mingji Dai | 2022-12-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D977052 | Swimming ring | Hao Chen, Mingji Dai | 2023-01-31 |
| D973820 | Swimming ring | Hao Chen, Mingji Dai | 2022-12-27 |