International Patent: AIR-EXTRACTION AND AIR-INJECTION DUAL-PURPOSE DEWATERING WELL APPARATUS AND CONSTRUCTION METHOD

GENEVA, Oct. 30 -- SHANGHAI CHANGKAI GEOTECHNICAL ENGINEERING CO., LTD filed a patent application (CN2025/132708) for “AIR-EXTRACTION AND AIR-INJECTION DUAL-PURPOSE DEWATERING WELL APPARATUS AND CONSTRUCTION METHOD”. With publication no. WO/2026/223004, here are the other details related to the patent application:

Kind: Initial Publication with ISR [A1]

IPC: E02D 19/10

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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