Improvements in or relating to thermionic voltmeters,申请号GB19350013987-传众专利搜索

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发明名称	Improvements in or relating to thermionic voltmeters
摘要
申请公布号	GB461494(A)	申请公布日期	1937.02.15
申请号	GB19350013987	申请日期	1935.05.13
申请人	PETER WILLIAM WILLANS	发明人
分类号	G01R15/08;G01R19/22	主分类号	G01R15/08
代理机构		代理人
主权项
地址

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