Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11603751 | Push-pull force control method for horizontal directional drilling machine and horizontal directional drilling machine | Li Zhang, Zhonghai Zhang, Jiguang Zhang, Weixiang Lv, Yonghua Zhang +3 more | 2023-03-14 |