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发明名称
High impedance direct current voltmeter and amplifier circuits
摘要
申请公布号
US3259845(A)
申请公布日期
1966.07.05
申请号
US19620172303
申请日期
1962.02.09
申请人
HERBERT COHEN
发明人
COHEN HERBERT
分类号
G01R19/00
主分类号
G01R19/00
代理机构
代理人
主权项
地址
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