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发明名称
AN IMPROVED STRUCTURAL BLOCK FOR USE AS A TUNNEL LINER
摘要
申请公布号
GB1255475(A)
申请公布日期
1971.12.01
申请号
GB19670057856
申请日期
1967.12.20
申请人
RODNEY DEREK SHAW
发明人
RODNEY DEREK SHAW
分类号
E21D11/08
主分类号
E21D11/08
代理机构
代理人
主权项
地址
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