Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D930912 | Welding filter | Jianrong Zhou, Rongjiang Wang | 2021-09-14 |
| D923879 | Welders' mask | Jianrong Zhou, Rongjiang Wang, Ziyang Zhou | 2021-06-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D930912 | Welding filter | Jianrong Zhou, Rongjiang Wang | 2021-09-14 |
| D923879 | Welders' mask | Jianrong Zhou, Rongjiang Wang, Ziyang Zhou | 2021-06-29 |