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发明名称
Dispositif destiné à mesurer des tensions électriques continues de faible valeur
摘要
申请公布号
FR892659(A)
申请公布日期
1944.05.16
申请号
FRD892659
申请日期
1942.01.05
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G01R19/18
主分类号
G01R19/18
代理机构
代理人
主权项
地址
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