1–13 of 13 hits
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    Cleaning system for bottom of ship and Cleaning method for bottom of ship

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2022

    PROPULSION APPARATUS FOR SHIP USING WAVE FORCE AND SHIP WITH PROPULSION APPARATUS

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2021

    SELF-CHARGING DRONE

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2018

    SELF-GENERATING SHIP

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2019

    UNDERWATER ROBOT SYSTEM BASED SURFACE CRAFT

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2018

    Ship with Electric Power Generation Device using Wave Force

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2017

    SHIP EQUIPPED WITH PROPULSION SYSTEM USING WAVE FORCE

    Free access
    CHOI HYEUNG SIK | European Patent Office | 2017

    SAFETY LADDER SYSTEM FOR SHIP CABIN

    Free access
    CHOI HYEUNG SIK / JI DAE HYEUNG | European Patent Office | 2015

    UNMANNED SURFACE BOAT FOR ENVIRONMENTAL RECOVERY

    Free access
    CHOI HYEUNG SIK / KIM DEOK SOO | European Patent Office | 2015

    hybrid underwater glider

    Free access
    CHOI HYEUNG SIK / KIM JOON YOUNG / LEE SUNG WOOK | European Patent Office | 2018

    UNDERWATER GLIDER

    Free access
    CHOI HYEUNG SIK / HA JI HOON / JEON JI HYE et al. | European Patent Office | 2016

    UNMANNED UNDERWATER VEHICLE USING MASS MOVING

    Free access
    BYUN SEUNG WOO / KIM JOON YOUNG / CHOI HYEUNG SIK et al. | European Patent Office | 2016