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发明名称
Method of and apparatus for the insulation of tunnels
摘要
申请公布号
GB380685(A)
申请公布日期
1932.09.22
申请号
GB19320001075
申请日期
1932.01.13
申请人
GUENTHER WERNER-EHRENFEUCHT
发明人
分类号
E21D11/38
主分类号
E21D11/38
代理机构
代理人
主权项
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