Improvements in electrical frequency meters,申请号GB19440008135-传众专利搜索

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发明名称	Improvements in electrical frequency meters
摘要
申请公布号	GB578819(A)	申请公布日期	1946.07.12
申请号	GB19440008135	申请日期	1944.05.01
申请人	THE GENERAL ELECTRIC COMPANY LIMITED;FREDERICK COLIN FRANK PHILLIPS	发明人
分类号	G01R23/02	主分类号	G01R23/02
代理机构		代理人
主权项
地址

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