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发明名称
TRANSDUCTEUR ELECTROACOUSTIQUE DIRECTIONNEL, NOTAMMENT EMETTEUR ACOUSTIQUE CARDIOIDE
摘要
申请公布号
FR2329129(A1)
申请公布日期
1977.05.20
申请号
FR19760031792
申请日期
1976.10.21
申请人
ELEKTROAKUSZTIKAI GYAR
发明人
GEZA BALOGH
分类号
H04R1/28;H04R1/34;(IPC1-7):H04R1/34
主分类号
H04R1/28
代理机构
代理人
主权项
地址
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