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发明名称
Grundplatte fuer Grubenstempel
摘要
申请公布号
DE1043252(B)
申请公布日期
1958.11.13
申请号
DE1956H026897
申请日期
1956.04.27
申请人
GUENTHER W. HAMMER
发明人
HAMMER GUENTHER W.
分类号
E21D15/54;E21D15/60
主分类号
E21D15/54
代理机构
代理人
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