Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11814272 | Jack with double high-pressure structure | Yufeng He, Gang Sun | 2023-11-14 |
| 11780717 | Jack with a protecting structure of a pump piston and method for using the same | Guoliang HE, Gang Sun, Guannan Lu, Hangfeng Li | 2023-10-10 |