Lv; Weixiang
Patent Applications and Registrations
Patent applications and USPTO patent grants for Lv; Weixiang.The latest application filed is for "push-pull force control method for horizontal directional drilling machine and horizontal directional drilling machine".
- Lv; Weixiang - Xuzhou CN
| Patent | Date |
|---|---|
| Double-walled drill pipe and drilling machine Grant 11,268,328 - Yang , et al. March 8, 2 | 2022-03-08 |
| Push-pull Force Control Method For Horizontal Directional Drilling Machine And Horizontal Directional Drilling Machine App 20220003109 - ZHANG; Li ; et al. | 2022-01-06 |
| Double-walled Drill Pipe And Drilling Machine App 20210310315 - YANG; Ming ; et al. | 2021-10-07 |
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