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Patent applications and USPTO patent grants for LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD..The latest application filed is for "six-arm tunneling and anchoring machine for integrating tunneling and anchoring".
Patent | Date |
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Six-Arm Tunneling and Anchoring Machine for Integrating Tunneling and Anchoring App 20220090498 - PU; Changyan ;   et al. | 2022-03-24 |
Process and device for supporting anchor bolt and anchor cable on successive mining working face Grant 11,208,888 - Pu , et al. December 28, 2 | 2021-12-28 |
Process And Device For Supporting Anchor Bolt And Anchor Cable On Successive Mining Working Face App 20210180453 - PU; Changyan ;   et al. | 2021-06-17 |
Auxiliary Transportation and Support System Used after Rapid Excavation App 20200208519 - PU; Changyan ;   et al. | 2020-07-02 |
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