1–3 of 3 hits
|

    U-SHAPED LOCK

    Free access
    YANG ZHONGJIE / XIA YIPING / WANG YANG et al. | European Patent Office | 2020

    HORSESHOE-SHAPED LOCK

    Free access
    YANG ZHONGJIE / XIA YIPING / WANG YANG et al. | European Patent Office | 2018

      Horseshoe-shaped lock

      Free access
      YANG ZHONGJIE / XIA YIPING / WANG YANG et al. | European Patent Office | 2019

    U U-SHAPED LOCK

    Free access
    YANG ZHONGJIE / XIA YIPING / WANG YANG et al. | European Patent Office | 2018