Apparatus for the transformation of direct electric currents,申请号US19340713402-传众专利搜索

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发明名称	Apparatus for the transformation of direct electric currents
摘要
申请公布号	US1990780(A)	申请公布日期	1935.02.12
申请号	US19340713402	申请日期	1934.02.28
申请人	GENERAL ELECTRIC COMPANY	发明人	FIELD ALLAN BERTRAM;DANNATT CECIL
分类号	H02M3/24	主分类号	H02M3/24
代理机构		代理人
主权项
地址

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