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    SHIP HAVING PROPULSION APPARATUS TO EASY ASSEMBLE AND DISASSEMBLE

    Free access
    KIM KYU CHANG | European Patent Office | 2016

    Control method of in-wheel drive for electric bicycles

    Free access
    KIM KYU CHANG / CHOI JUN CHUL / KIM JUNG SAM et al. | European Patent Office | 2017

    Control device of in-wheel drive for electric bicycles

    Free access
    KIM KYU CHANG / CHOI JUN CHUL / KIM JUNG SAM et al. | European Patent Office | 2017

    The Electric bicycle battery-powered drive unit

    Free access
    KIM KYU CHANG / LEE DO HWAN / KIM MUN HYEON et al. | European Patent Office | 2016