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发明名称
ELEKTROAKUSTISCHER WANDLER MIT EINER MEMBRAN
摘要
申请公布号
DE2658644(A1)
申请公布日期
1977.07.14
申请号
DE19762658644
申请日期
1976.12.23
申请人
SOCIETA ITALIANA TELECOMUNICAZIONI SIEMENS S.P.A.
发明人
PIPITONE,ROBERTO,DIPL.-ING.;GNOCCHI,COLOMBO
分类号
H04R7/22;H04R17/00;(IPC1-7):H04R7/18
主分类号
H04R7/22
代理机构
代理人
主权项
地址
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