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    TRAILER HITCH COUPLER

    Free access
    XU NAIYONG / WANG YU / SHAO JUNJIAN et al. | European Patent Office | 2023

    Trailer coupler with good mounting performance

    Free access
    XU NAIYONG / WANG YU / SHAO JUNJIAN et al. | European Patent Office | 2022

      Trailer coupler with good mounting performance

      Free access
      XU NAIYONG / WANG YU / SHAO JUNJIAN et al. | European Patent Office | 2021

    Numerical control cutting method, steel structure and ship

    Free access
    LIU YA / ZHANG QIANG / MA LING et al. | European Patent Office | 2021