Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840982 | Quick oil return cylinder liner | Haixiao Chai | 2023-12-12 |
| 11788622 | Piston ring for engine and machining method of piston ring | — | 2023-10-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840982 | Quick oil return cylinder liner | Haixiao Chai | 2023-12-12 |
| 11788622 | Piston ring for engine and machining method of piston ring | — | 2023-10-17 |