Means for defining radio courses,申请号US19420434067-传众专利搜索

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发明名称	Means for defining radio courses
摘要
申请公布号	US2421023(A)	申请公布日期	1947.05.27
申请号	US19420434067	申请日期	1942.03.10
申请人	FEDERAL TELEPHONE AND RADIO CORPORATION	发明人	FRINK FREDERICK W.
分类号	G01S1/02;G01S19/53	主分类号	G01S1/02
代理机构		代理人
主权项
地址

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