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发明名称
UEberwachungseinrichtung fuer optisch-elektrische Tonwiedergabeeinrichtungen
摘要
申请公布号
DE544511(C)
申请公布日期
1932.02.24
申请号
DE1928S088522D
申请日期
1928.11.20
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
GERLACH ERWIN
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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