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classificationCode:"ipc:B63B"

    一种地震采集船用浮体大头

    Free access
    European Patent Office | 2024

    Water surface power buoy for assisting underwater detection

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    XU PENGFEI / CHEN MEIYA / LI JUNJIE et al. | European Patent Office | 2024

    Floating type hydrology and water resource surveying device

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    LIU YAOFENG | European Patent Office | 2024

    一种水利工程用水利监测装置

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    European Patent Office | 2024

    Marine manhole sealing device

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    LIU FENG / TIAN MENG / CHEN KUANGYU | European Patent Office | 2024

    Novel hydrological test buoy device and system

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    WANG WENLIANG / ZHANG KEYANG / ZHANG JIAN | European Patent Office | 2024