Half duplex telegraph repeater, including break feature,申请号US19490118118-传众专利搜索

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发明名称	Half duplex telegraph repeater, including break feature
摘要
申请公布号	US2609453(A)	申请公布日期	1952.09.02
申请号	US19490118118	申请日期	1949.09.27
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	REA WILTON T.
分类号	H04L25/04;H04L25/20	主分类号	H04L25/04
代理机构		代理人
主权项
地址

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