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发明名称
Verfahren und Vorrichtung zur Aufnahme von Schallfilmen
摘要
申请公布号
DE537903(C)
申请公布日期
1931.11.07
申请号
DE1927T033932D
申请日期
1927.08.25
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
SCHROETER DR. FRITZ
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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