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发明名称
LINING FOR SOFT-GROUND TUNNELS AND METHOD OF ASSEMBLING THE SAME
摘要
申请公布号
CA689778(A)
申请公布日期
1964.06.30
申请号
CAD689778
申请日期
申请人
RHEINSTAHL EISENWERKE GELSENKIRCHEN AKTIENGESELLSCHAFT
发明人
FRIEDRICH HERTRICH
分类号
主分类号
代理机构
代理人
主权项
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