Improvements in carrier current electric signalling systems,申请号GB19310019421-传众专利搜索

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发明名称	Improvements in carrier current electric signalling systems
摘要
申请公布号	GB380539(A)	申请公布日期	1932.09.22
申请号	GB19310019421	申请日期	1931.07.06
申请人	THE GENERAL ELECTRIC COMPANY LIMITED;FRANCIS BARRETT WILLIS;EDGAR PHILIP LAWRENCE WESTELL	发明人
分类号	H04B3/56	主分类号	H04B3/56
代理机构		代理人
主权项
地址

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