Switching on electric wave signal transmission systems,申请号GB19300018158-传众专利搜索

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发明名称	Switching on electric wave signal transmission systems
摘要
申请公布号	GB357134(A)	申请公布日期	1931.09.14
申请号	GB19300018158	申请日期	1930.06.13
申请人	STANDARD TELEPHONES AND CABLES, LIMITED;SYDNEY HERBERT GROVE;KENNETH GEORGE HODGSON	发明人
分类号	H04B3/20	主分类号	H04B3/20
代理机构		代理人
主权项
地址

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