Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12007024 | Lubricating mechanism of pin connection pair of internal combustion engine | Junzhuo Liu | 2024-06-11 |
| 11846351 | Piston having oil return passage | Jianjun Zhu | 2023-12-19 |