Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11441201 | Sucker rod steel and manufacturing method therefor | Xiangjiang Liu | 2022-09-13 |
| 11396682 | Free machining and non-quenched and tempered steel and manufacturing method therefor | Dajiang Yu, Xijun JIANG, Rui Huang | 2022-07-26 |