Electrical signalling systems,申请号US19510207891-传众专利搜索

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发明名称	Electrical signalling systems
摘要
申请公布号	US2769030(A)	申请公布日期	1956.10.30
申请号	US19510207891	申请日期	1951.01.26
申请人	THOMAS BAKER GEORGE	发明人	BAKER GEORGE THOMAS
分类号	H04L5/24	主分类号	H04L5/24
代理机构		代理人
主权项
地址

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