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发明名称
Vorrichtung zum Messen sehr schwacher Stroeme
摘要
申请公布号
DE1013787(B)
申请公布日期
1957.08.14
申请号
DE1953N006585
申请日期
1953.01.03
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
HEPP GERARD
分类号
G01T1/185
主分类号
G01T1/185
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代理人
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地址
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