DC AMPLIFIER WITH PERIODICAL ADJUSTMENT OF ZERO,ESPECIALLY FOR DIGITAL VOLTMETERS,申请号PL19820238225-传众专利搜索

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发明名称	DC AMPLIFIER WITH PERIODICAL ADJUSTMENT OF ZERO,ESPECIALLY FOR DIGITAL VOLTMETERS
摘要
申请公布号	PL137208(B1)	申请公布日期	1986.05.31
申请号	PL19820238225	申请日期	1982.09.14
申请人		发明人
分类号	G01R;G01R1/30;G01R35/00;H03F;H03F3/343;H03F3/72;(IPC1-7):H03F3/343	主分类号	G01R
代理机构		代理人
主权项
地址

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