Improvements in or relating to radio signalling systems,申请号GB19290022491-传众专利搜索

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发明名称	Improvements in or relating to radio signalling systems
摘要
申请公布号	GB316101(A)	申请公布日期	1930.09.18
申请号	GB19290022491	申请日期	1929.07.22
申请人	TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.	发明人
分类号	H03C1/54	主分类号	H03C1/54
代理机构		代理人
主权项
地址

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