Improvements relating to electric potential indicating devices,申请号GB19300006072-传众专利搜索

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发明名称	Improvements relating to electric potential indicating devices
摘要
申请公布号	GB355692(A)	申请公布日期	1931.08.24
申请号	GB19300006072	申请日期	1930.02.24
申请人	THE EDISON SWAN ELECTRIC COMPANY, LIMITED;ERNEST GREETHAM;GEORGE FREDERICK SHOTTER	发明人
分类号	G01R31/02	主分类号	G01R31/02
代理机构		代理人
主权项
地址

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