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发明名称
Voltmètre électronique à opposition.
摘要
申请公布号
CH231516(A)
申请公布日期
1944.03.31
申请号
CHD231516
申请日期
1942.09.19
申请人
ROGER BOY DE LA TOUR
发明人
TOUR ROGER BOY DE LA
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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