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发明名称
Einrichtung zur Aufnahme oder Wiedergabe von Tonfilmen
摘要
申请公布号
DE651176(C)
申请公布日期
1937.10.08
申请号
DENDATT040517D
申请日期
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
G11B7/003;G11B7/135
主分类号
G11B7/003
代理机构
代理人
主权项
地址
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