Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D936311 | Vacuum cleaner | — | 2021-11-16 |
| 10921228 | Testing device and method for floating rate of floating agent for fracture height control | Youshi Jiang, Yongming Li, Bo Chen, Jinzhou Zhao | 2021-02-16 |