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发明名称
MICROPHONE & LOUDSPEAKER SYSTEM
摘要
申请公布号
GB8617953(D0)
申请公布日期
1986.08.28
申请号
GB19860017953
申请日期
1986.07.23
申请人
WEHNER, R
发明人
分类号
H04R1/40;B63B35/81;H04R5/02;H04R5/027
主分类号
H04R1/40
代理机构
代理人
主权项
地址
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