Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12196229 | Unloading valve and combined valve type buffer cylinder | Dewei Zhu | 2025-01-14 |
| 11761491 | Ball-hinged transmission shaft with straight shaft | Dewei Zhu, Rongren Cao | 2023-09-19 |