Frequency changing apparatus and method,申请号US19430493888-传众专利搜索

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发明名称	Frequency changing apparatus and method
摘要
申请公布号	US2395744(A)	申请公布日期	1946.02.26
申请号	US19430493888	申请日期	1943.07.08
申请人	C. G. CONN, LTD.	发明人	KENT EARLE L.
分类号	H01J31/64;H03B13/00	主分类号	H01J31/64
代理机构		代理人
主权项
地址

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