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经营范围
发明名称
Eiserner Grubenstempel
摘要
申请公布号
DE639836(C)
申请公布日期
1936.12.15
申请号
DE1935S117686D
申请日期
1935.03.26
申请人
RUDOLF SPOLDERS
发明人
分类号
E21D15/32;E21D15/502
主分类号
E21D15/32
代理机构
代理人
主权项
地址
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