CN216973462U - 一种降水井结构 - Google Patents
一种降水井结构 Download PDFInfo
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Effective date of registration: 20230607 Address after: Floor 21-22, building 4, No. 1999, middle section of Yizhou Avenue, high tech Zone, Chengdu, Sichuan 610000 Patentee after: China Railway Construction Kunlun Investment Group Co.,Ltd. Patentee after: CHINA RAILWAY CONSTRUCTION KUNLUN METRO INVESTMENT CONSTRUCTION MANAGEMENT Co.,Ltd. Address before: Room 1003, 10th floor, unit 2, building 7, No. 399, West Fucheng Avenue, high tech Zone, Chengdu, Sichuan 610000 Patentee before: Chengdu Branch of China Railway Construction Bridge Engineering Bureau Group Co.,Ltd. |