Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10986440 | Earbud | Caiyun Hu, Hongmei Wang, Kaibo Xing, Huijin Chen | 2021-04-20 |
| 10928282 | Method and device for determining elasticity of cement stone utilized in well cementing of oil-gas well | Youzhi Zheng, Bo Kong, Jie Li, Huiyun Ma, Yu SANG +15 more | 2021-02-23 |