Improvements in or relating to frequency transformation devices,申请号GB19570007750-传众专利搜索

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发明名称	Improvements in or relating to frequency transformation devices
摘要
申请公布号	GB862426(A)	申请公布日期	1961.03.08
申请号	GB19570007750	申请日期	1957.03.08
申请人	PHILIPS ELECTRICAL INDUSTRIES LIMITED	发明人
分类号	H03B19/03	主分类号	H03B19/03
代理机构		代理人
主权项
地址

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