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发明名称
Eiserner Grubenstempel
摘要
申请公布号
DE803897(C)
申请公布日期
1951.04.12
申请号
DE1948P012842
申请日期
1948.10.02
申请人
HERMANN SCHWARZ KOMM.-GES.
发明人
分类号
E21D15/28
主分类号
E21D15/28
代理机构
代理人
主权项
地址
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