Transmission of low frequency signals by modulation of voice carrier,申请号US19640379587-传众专利搜索

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发明名称	Transmission of low frequency signals by modulation of voice carrier
摘要
申请公布号	US3406344(A)	申请公布日期	1968.10.15
申请号	US19640379587	申请日期	1964.07.01
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	HOPPER ANDREW L.
分类号	H04J1/00;H04L5/00	主分类号	H04J1/00
代理机构		代理人
主权项
地址

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