GENEVA, July 28 -- CRRC QINGDAO SIFANG CO., LTD. (No.88 Jinhongdong Road, Chengyang DistrictQingdao, Shandong 266111), 中车青岛四方机车车辆股份有限公司 (中国山东省青岛市城阳区锦宏东路88号) filed a patent application (PCT/CN2025/082189) for "METHOD AND DEVICE FOR CONTROLLING AUXILIARY LOCK OF VEHICLE DOOR, AND RAIL VEHICLE" on Mar 12, 2025. With publication no. WO/2025/153114, the details related to the patent application was published on Jul 24, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) sys...