CN216045854U - 矿井结构强度和无线信号增强系统 - Google Patents
矿井结构强度和无线信号增强系统 Download PDFInfo
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Effective date of registration: 20230613 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 325035 Wenzhou City National University Science Park incubator, No. 38 Dongfang South Road, Ouhai District, Wenzhou, Zhejiang Patentee before: WENZHOU VOCATIONAL & TECHNICAL College Effective date of registration: 20230613 Address after: 710000 Room 601, Unit 1, Building 5, Beichen Village, Xujiawan Street, Weiyang District, Xi'an City, Shaanxi Province Patentee after: Shaanxi Guanjing Information Technology Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. |
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