Carrier current telegraph system,申请号US19420456469-传众专利搜索

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发明名称	Carrier current telegraph system
摘要
申请公布号	US2347332(A)	申请公布日期	1944.04.25
申请号	US19420456469	申请日期	1942.08.28
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	PHELPS WALTER A.
分类号	H04L5/06	主分类号	H04L5/06
代理机构		代理人
主权项
地址

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