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发明名称
Tonbelichtungseinrichtung zur Aufzeichnung oder Wiedergabe von photographischen Tonaufzeichnungen
摘要
申请公布号
DE567827(C)
申请公布日期
1933.01.13
申请号
DED567827D
申请日期
1930.12.13
申请人
ALLGEMEINE ELEKTRICITAETS-GESELLSCHAFT
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
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地址
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