GENEVA, June 19 -- CHINA RAILWAY 11TH BUREAU GROUP CO., LTD. filed a patent application (CN2025/119962) for “SLURRY PIPE EXTENSION SYSTEM AND METHOD FOR SPLIT-TYPE LAUNCH OF SLURRY SHIELD MACHINE”. With publication no. WO/2026/103299, here are the other details related to the patent application:
Kind: Initial Publication with ISR [A1]
IPC: E21D 9/06
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
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