Electrical testing device,申请号GB19390012941-传众专利搜索

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发明名称	Electrical testing device
摘要
申请公布号	GB528213(A)	申请公布日期	1940.10.24
申请号	GB19390012941	申请日期	1939.05.01
申请人	WALTER RAY STEELE	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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