Elimination of tricords in toll exchanges,申请号US19470750124-传众专利搜索

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发明名称	Elimination of tricords in toll exchanges
摘要
申请公布号	US2568733(A)	申请公布日期	1951.09.25
申请号	US19470750124	申请日期	1947.05.23
申请人	INTERNATIONAL STANDARD ELECTRIC CORP.	发明人	HENQUET ANDRE JEAN;MAUGE ROGER MARCEL
分类号	H04M3/60	主分类号	H04M3/60
代理机构		代理人
主权项
地址

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