Control of transmission in two-way signaling systems,申请号US19390273375-传众专利搜索

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发明名称	Control of transmission in two-way signaling systems
摘要
申请公布号	US2209667(A)	申请公布日期	1940.07.30
申请号	US19390273375	申请日期	1939.05.13
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	TAYLOR CHARLES C.
分类号	H04B3/20;H04M3/40	主分类号	H04B3/20
代理机构		代理人
主权项
地址

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