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发明名称
Elektroakustische UEbertragungsanlage mit Hauptzentrale und Unterzentralen
摘要
申请公布号
DE931898(C)
申请公布日期
1955.08.18
申请号
DE1952S030845
申请日期
1952.10.26
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
MUZIKA CARL VON DIPL.-ING.
分类号
H04R27/00
主分类号
H04R27/00
代理机构
代理人
主权项
地址
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