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发明名称
Elastischer Metallgrubenstempel
摘要
申请公布号
DE508162(C)
申请公布日期
1930.09.25
申请号
DE1928R074442D
申请日期
1928.04.28
申请人
FRIEDRICH REIDIGER
发明人
分类号
E21D15/20;E21D15/24;E21D15/502
主分类号
E21D15/20
代理机构
代理人
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