Automatic telephone system,申请号US19550522233-传众专利搜索

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发明名称	Automatic telephone system
摘要
申请公布号	US3007008(A)	申请公布日期	1961.10.31
申请号	US19550522233	申请日期	1955.07.15
申请人	NORTH ELECTRIC COMPANY	发明人	SPJELDNES KARE K.;CALLENDER JACK E.;SLEMMER ROBERT H.;BLASHFIELD WILLIAM H.
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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