Frequency changer,申请号US19430485833-传众专利搜索

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发明名称	Frequency changer
摘要
申请公布号	US2418641(A)	申请公布日期	1947.04.08
申请号	US19430485833	申请日期	1943.05.06
申请人	CLOSMAN P. STOCKER;E. M. HEAVENS	发明人	HUGE HENRY M.
分类号	H01F38/04;H03B19/03	主分类号	H01F38/04
代理机构		代理人
主权项
地址

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