GENEVA, May 17 -- CHINA RAILWAY NO.9 GROUP CO., LTD (No. 3-1, Jingbin Street, Shenhe DistrictShenyang, Liaoning 110000), 中铁九局集团有限公司 (中国辽宁省沈阳市沈河区敬宾街3-1号) filed a patent application (PCT/CN2024/120551) for "TENSIONING FORCE CONTROL DEVICE FOR PRESTRESSED SLEEPERS" on Sep 24, 2024. With publication no. WO/2025/098037, the details related to the patent application was published on May 15, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
...