1–7 von 7 Ergebnissen
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    Power-off safety device for brake handle of electric vehicle

    Freier Zugriff
    ZHOU ZHENGJUN | Europäisches Patentamt | 2021

    Tricycle oil disc parking locking device

    Freier Zugriff
    ZHOU ZHENGJUN | Europäisches Patentamt | 2020

    Variable-speed rotating handle with labor-saving mechanism

    Freier Zugriff
    ZHOU ZHENGJUN | Europäisches Patentamt | 2023

    Oil pressure brake device with bell and power-off function

    Freier Zugriff
    ZHOU ZHENGJUN / HUANG AI | Europäisches Patentamt | 2021

    Directional universal switching device of robot casters and walking device

    Freier Zugriff
    LU HUIWEN / ZHOU ZHENGJUN | Europäisches Patentamt | 2020

    Oil leakage-preventing oil pressure disc brake

    Freier Zugriff
    ZHOU ZHENGJUN / ZHOU YUANWEN | Europäisches Patentamt | 2015

    Adjustable oil-pressure disc brake

    Freier Zugriff
    LU GUOJIE / ZHOU ZHENGJUN | Europäisches Patentamt | 2015