Signalling system for simultaneously transmitting a plurality of messages,申请号US19530338112-传众专利搜索

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发明名称	Signalling system for simultaneously transmitting a plurality of messages
摘要
申请公布号	US2877304(A)	申请公布日期	1959.03.10
申请号	US19530338112	申请日期	1953.02.20
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人	HAGENHAUS KURT
分类号	E21F15/04;H04Q11/04	主分类号	E21F15/04
代理机构		代理人
主权项
地址

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