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发明名称
Einrichtung zur Herstellung von photographischen Schallaufzeichnungen mit Reintonwirkung
摘要
申请公布号
DE746938(C)
申请公布日期
1944.01.04
申请号
DE1932T040389D
申请日期
1932.03.16
申请人
发明人
分类号
G11B7/00
主分类号
G11B7/00
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代理人
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