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    SEALING DEVICE FOR HYPER-TUBE

    Free access
    CHEO JAE HEON / LEE KWAN SUP / CHOI SU YONG et al. | European Patent Office | 2021

    TUBE INFRASTRUCTURE WITH VACUUM PRESSURE

    Free access
    CHOE JAE HEON / LEE KWAN SUP / CHOI SU YONG et al. | European Patent Office | 2019

      TUBE INFRASTRUCTURE WITH VACUUM PRESSURE

      Free access
      CHOE JAE HEON / LEE KWAN SUP / CHOI SU YONG et al. | European Patent Office | 2022

    TUBE INFRASTRUCTURE UNDER NEGATIVE PRESSURE

    Free access
    CHOE JAE HEON / LEE KWAN SUP / CHOI SU YONG et al. | European Patent Office | 2019