Improvements in or relating to wave-signalling systems,申请号GB19290023060-传众专利搜索

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发明名称	Improvements in or relating to wave-signalling systems
摘要
申请公布号	GB337048(A)	申请公布日期	1930.10.27
申请号	GB19290023060	申请日期	1929.07.26
申请人	JAMES ROBINSON	发明人
分类号	H03C3/26	主分类号	H03C3/26
代理机构		代理人
主权项
地址

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