Improvements in or relating to frequency converters,申请号GB19370017757-传众专利搜索

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发明名称	Improvements in or relating to frequency converters
摘要
申请公布号	GB497755(A)	申请公布日期	1938.12.28
申请号	GB19370017757	申请日期	1937.06.25
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY, LIMITED;FRANK MCCABE	发明人
分类号	H02M11/00	主分类号	H02M11/00
代理机构		代理人
主权项
地址

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