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发明名称
DIRECTIONAL MICROPHONE
摘要
申请公布号
SU706938(A1)
申请公布日期
1979.12.30
申请号
SU19762371216
申请日期
1976.06.11
申请人
GRILIKHES NELLI ,SU
发明人
GRILIKHES NELLI ,SU
分类号
H04R1/08;(IPC1-7):H04R1/08
主分类号
H04R1/08
代理机构
代理人
主权项
地址
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