Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11560980 | Grease pumping device | Xingong Liu, Zhang Liu, Lifeng Ma | 2023-01-24 |
| 9593805 | Liquid distributing valve | Jianhua Li, Yankai Si, Lifeng Ma | 2017-03-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11560980 | Grease pumping device | Xingong Liu, Zhang Liu, Lifeng Ma | 2023-01-24 |
| 9593805 | Liquid distributing valve | Jianhua Li, Yankai Si, Lifeng Ma | 2017-03-14 |