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发明名称
Einschalige,aus Stahlbetontuebbings hergestellte Tunnel- oder Schachtauskleidung
摘要
申请公布号
DE1784414(A1)
申请公布日期
1971.08.12
申请号
DE19681784414
申请日期
1968.08.06
申请人
WAYSS & FREYTAG KG
发明人
分类号
E21D5/10;E21D11/38
主分类号
E21D5/10
代理机构
代理人
主权项
地址
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