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发明名称
Verfahren zur Herstellung von Tonbildnegativen, die auf einem gemeinsamen Traeger Bildaufzeichnung und Tonaufzeichnung vereinigen
摘要
申请公布号
DE528711(C)
申请公布日期
1931.07.03
申请号
DE1929F068132D
申请日期
1929.04.03
申请人
BERTHOLD FREUND
发明人
分类号
G03C5/14;G11B7/00
主分类号
G03C5/14
代理机构
代理人
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