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发明名称
Einrichtung an Karteikarten mit am unteren Rande angebrachtem Zahn
摘要
申请公布号
DE727670(C)
申请公布日期
1942.11.09
申请号
DE1939V036146D
申请日期
1939.08.25
申请人
ALFRED VOLK
发明人
VOLK ALFRED
分类号
B42F21/10
主分类号
B42F21/10
代理机构
代理人
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