Directional antenna system,申请号US19370137690-传众专利搜索

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发明名称	Directional antenna system
摘要
申请公布号	US2227088(A)	申请公布日期	1940.12.31
申请号	US19370137690	申请日期	1937.04.19
申请人	TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE, M. B. H.	发明人	HOLLMANN HANS ERICH
分类号	H01Q11/20	主分类号	H01Q11/20
代理机构		代理人
主权项
地址

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