Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9771247 | Cylinder-driven lifting mechanism of compaction machine and compaction machine | Xiaogang Yi, Dong-Yun Li, Zhekui Quan | 2017-09-26 |
| 9187916 | Boom system, engineering machinery, and a method for acquiring boom system distal end position parameter | Xiaogang Yi, Dong-Yun Li | 2015-11-17 |