CN216841725U - 一种用于桥梁工程的隧道内部降噪装置 - Google Patents
一种用于桥梁工程的隧道内部降噪装置 Download PDFInfo
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Effective date of registration: 20240703 Address after: Room 65B314, Dongsantiao Street, Kuancheng District, Changchun City, Jilin Province, 130000 Patentee after: China Railway Jilin Investment and Construction Co.,Ltd. Country or region after: China Address before: 050000 Room 101, unit 1, building 21, No. 979, Zhongshan West Road, Shangzhuang Town, Luquan District, Shijiazhuang City, Hebei Province Patentee before: Bai Xiaoming Country or region before: China |