Improvements in or relating to electric frequency changing circuits,申请号GB19570011186-传众专利搜索

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发明名称	Improvements in or relating to electric frequency changing circuits
摘要
申请公布号	GB805189(A)	申请公布日期	1958.12.03
申请号	GB19570011186	申请日期	1957.04.05
申请人	KOLSTER-BRANDES LIMITED	发明人	GREEN DAVID ALBERT
分类号	H03D7/12	主分类号	H03D7/12
代理机构		代理人
主权项
地址

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