CIRCUITO PERFECCIONADO DE EMISION DE SENAL ACUSTICA.,申请号ES19520004630-传众专利搜索

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发明名称	CIRCUITO PERFECCIONADO DE EMISION DE SENAL ACUSTICA.
摘要
申请公布号	ES463052(A1)	申请公布日期	1978.07.01
申请号	ES19520004630	申请日期	1977.10.08
申请人	TELEFONAKTIEBOLAGET L. M. ERICSSON	发明人
分类号	H04M19/04;(IPC1-7):04M/	主分类号	H04M19/04
代理机构		代理人
主权项
地址

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