Electrical measuring instrument,申请号US19310580018-传众专利搜索

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发明名称	Electrical measuring instrument
摘要
申请公布号	US1918940(A)	申请公布日期	1933.07.18
申请号	US19310580018	申请日期	1931.12.10
申请人	TRIPLETT RAY L	发明人	TRIPLETT RAY L.
分类号	G01R1/02	主分类号	G01R1/02
代理机构		代理人
主权项
地址

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