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发明名称
MEHRWEG-LAUTSPRECHERSYSTEM
摘要
申请公布号
DE2608384(B2)
申请公布日期
1977.10.27
申请号
DE19762608384
申请日期
1976.03.01
申请人
发明人
分类号
H04R1/26;H04R3/14;(IPC1-7):H04R1/26;H04R3/12
主分类号
H04R1/26
代理机构
代理人
主权项
地址
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