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发明名称
Verfahren zur Herstellung von Duplikatnegativen
摘要
申请公布号
DE732555(C)
申请公布日期
1943.03.05
申请号
DE1939U014623D
申请日期
1939.02.02
申请人
UNIVERSUM-FILM AG.
发明人
HOFER DR. ERICH
分类号
G03C7/28
主分类号
G03C7/28
代理机构
代理人
主权项
地址
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