GENEVA, April 13 -- ZHANG, Jiwen (Room 202, 2nd Floor, Unit 2, Building 39No. 11 Nanhu Avenue, Hongshan DistrictWuhan, Hubei 430070), 张集文 (中国湖北省武汉市洪山区南湖大道11号39栋2单元2楼202室) filed a patent application (PCT/CN2025/126308) for "CYLINDRICAL HELICAL FASTENING STRUCTURE" on Oct 03, 2025. With publication no. WO/2026/073519, the details related to the patent application was published on Apr 09, 2026.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
Invent...