INTERNATIONAL PATENT: CHINA RAILWAY NO.5 ENGINEERING GROUP CO., LTD., 中铁五局集团有限公司 FILES APPLICATION FOR "WIND-CHAMBER INTELLIGENT VENTILATION CONTROL SYSTEM FOR TUNNEL CONSTRUCTION STAGE"

GENEVA, Nov. 23 -- CHINA RAILWAY NO.5 ENGINEERING GROUP CO., LTD. (No.23 Zaoshan Road, Yunyan DistrictGuiyang, Guizhou 550003), 中铁五局集团有限公司 (中国贵州省贵阳市云岩区枣山路23号) filed a patent application (PCT/CN2024/137967) for "WIND-CHAMBER INTELLIGENT VENTILATION CONTROL SYSTEM FOR TUNNEL CONSTRUCTION STAGE" on Dec 10, 2024. With publication no. WO/2025/236638, the details related to the patent application was published on Nov 20, 2025.

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