Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10994465 | Rigid connecting device for connecting the upper and lower surfaces inside an oil tank and production method of the oil tank | Yan Sun, Lin Jiang, Liang Liu, Wenbin Hong, Weidong Su +4 more | 2021-05-04 |