GENEVA, June 20 -- SHANGHAI RAILWAY COMMUNICATION CO., LTD (No. 489, North Xizang RoadJingan District, Shanghai 200071), 上海铁路通信有限公司 (中国上海市静安区西藏北路489号) filed a patent application (PCT/CN2023/138764) for "CONTINUOUS SIGNAL GENERATION APPARATUS FOR TRAIN-PASSAGE TRACK CIRCUIT, AND METHOD" on Dec 14, 2023. With publication no. WO/2025/123282, the details related to the patent application was published on Jun 19, 2025.

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization...