Frequency converter system,申请号US19490090416-传众专利搜索

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发明名称	Frequency converter system
摘要
申请公布号	US2653224(A)	申请公布日期	1953.09.22
申请号	US19490090416	申请日期	1949.04.29
申请人	RADIO CORPORATION OF AMERICA	发明人	VILKOMERSON BENJAMIN S.
分类号	H03D7/10	主分类号	H03D7/10
代理机构		代理人
主权项
地址

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