Improvements in or relating to frequency changers,申请号GB19550008804-传众专利搜索

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发明名称	Improvements in or relating to frequency changers
摘要
申请公布号	GB788231(A)	申请公布日期	1957.12.23
申请号	GB19550008804	申请日期	1955.03.25
申请人	THE GENERAL ELECTRIC COMPANY LIMITED;DAVID ALLEN SCOTT DRYBROUGH	发明人
分类号	H03D7/10	主分类号	H03D7/10
代理机构		代理人
主权项
地址

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