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发明名称
Grubenstempel aus Stahl
摘要
申请公布号
DE926722(C)
申请公布日期
1955.04.21
申请号
DE1948P014013
申请日期
1948.10.02
申请人
RINGFEDER G.M.B.H.
发明人
KREISSIG ERNST;SCHAEFER WILHELM DIPL.-ING.
分类号
E21D15/32
主分类号
E21D15/32
代理机构
代理人
主权项
地址
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