Changchun Wang

2 Patents

• US119123162024

  Vehicle Coupler, Coupler Tongue and Coupler Body

  CRRC QIQIHAR ROLLING STOCK CO., Ltd.

  0 cites
• US115601612023

  Railway Vehicle, Coupler, and Coupler Body Thereof

  CRRC QIQIHAR ROLLING STOCK CO., Ltd.

  0 cites