Automatic telephone traffic recorder employing magnetic tape,申请号US19540455154-传众专利搜索

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发明名称	Automatic telephone traffic recorder employing magnetic tape
摘要
申请公布号	US2976365(A)	申请公布日期	1961.03.21
申请号	US19540455154	申请日期	1954.09.10
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	JR. WILLIAM R. YOUNG,
分类号	H04M3/36	主分类号	H04M3/36
代理机构		代理人
主权项
地址

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