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发明名称
PILOT CIRCUIT FOR ELECTRODYNAMIC OR PIEZOCERAMIC RECEIVING TELEPHONE CAPSULES
摘要
申请公布号
EP0402969(A3)
申请公布日期
1992.07.15
申请号
EP19900201329
申请日期
1990.05.25
申请人
SIEMENS TELECOMUNICAZIONI S.P.A.
发明人
BURAGLIO, ALBERTO;COVINI, MARIO
分类号
H04M1/03;H04M1/60;H04R17/00;(IPC1-7):H04M1/60
主分类号
H04M1/03
代理机构
代理人
主权项
地址
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