Selective signal recognition system,申请号US19570693914-传众专利搜索

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发明名称	Selective signal recognition system
摘要
申请公布号	US2974281(A)	申请公布日期	1961.03.07
申请号	US19570693914	申请日期	1957.11.01
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	FELDMAN CARL B. H.
分类号	H04M11/06	主分类号	H04M11/06
代理机构		代理人
主权项
地址

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