Frequency measuring system,申请号US19430489085-传众专利搜索

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发明名称	Frequency measuring system
摘要
申请公布号	US2380868(A)	申请公布日期	1945.07.31
申请号	US19430489085	申请日期	1943.05.29
申请人	RADIO CORPORATION OF AMERICA	发明人	PETERSON HAROLD O.
分类号	G01R23/00	主分类号	G01R23/00
代理机构		代理人
主权项
地址

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