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经营范围
发明名称
Tunnel lining rings
摘要
申请公布号
GB2086959(A)
申请公布日期
1982.05.19
申请号
GB19800034472
申请日期
1980.10.27
申请人
CHARCON TUNNELS LTD
发明人
分类号
E21D11/08;(IPC1-7):E21D11/08
主分类号
E21D11/08
代理机构
代理人
主权项
地址
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