1–7 of 7 hits
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    Correction Method of RPM C/O in Offshore Heavy Oil Reservoir

    Wang, Zhong-Hao / Wu, Jin-bo / Li, Jing-Gong | Tema Archive | 2013

    Lifting type hay pulley device for steel wire operation

    Free access
    ZHANG WEIGUO / JIN HAO / LI BO et al. | European Patent Office | 2020

    Underground coal mine trackless auxiliary transportation robot

    Free access
    HAO MINGRUI / YUAN XIAOMING / ZHOU DEHUA et al. | European Patent Office | 2021

    Railway tunnel contact net rail groove mounting device and mounting method

    Free access
    LI DONGSHUN / CHEN HAO / YU YUEXIN et al. | European Patent Office | 2021

    Derrick structure suitable for super single operation and installation method

    Free access
    ZHU HAO / SUN GANG / ZHANG BIN et al. | European Patent Office | 2022

    Lifting derrick capable of being rapidly disassembled and assembled and installation method thereof

    Free access
    AN JIE / PENG TAIFENG / ZHANG ZHENYONG et al. | European Patent Office | 2023