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发明名称
MESSERSCHILD, INSBESONDERE DACHSCHILD ZUM AUFFAHREN UNTERIRDISCHER HOHLRAEUME
摘要
申请公布号
DE2314703(B2)
申请公布日期
1977.04.14
申请号
DE19732314703
申请日期
1973.03.24
申请人
发明人
分类号
E21D9/06;E21D19/04;(IPC1-7):E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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