Electronic testing instrument,申请号US19510205656-传众专利搜索

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发明名称	Electronic testing instrument
摘要
申请公布号	US2749514(A)	申请公布日期	1956.06.05
申请号	US19510205656	申请日期	1951.01.12
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	ZAFFARANO FRANK P.
分类号	G04F10/04;H03K23/82	主分类号	G04F10/04
代理机构		代理人
主权项
地址

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