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发明名称
Grubenstempel
摘要
申请公布号
DE923245(C)
申请公布日期
1955.02.07
申请号
DE1951SC06410
申请日期
1951.04.22
申请人
SCHMIDT LEONHARD
发明人
SCHMIDT LEONHARD
分类号
E21D15/08
主分类号
E21D15/08
代理机构
代理人
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