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发明名称
Nachgiebiger Grubenausbau
摘要
申请公布号
DE967103(C)
申请公布日期
1957.10.03
申请号
DE1955M028293
申请日期
1955.09.23
申请人
WALTER MURMANN
发明人
MURMANN WALTER
分类号
E21D11/18;E21D15/22
主分类号
E21D11/18
代理机构
代理人
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