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发明名称
Verfahren zum Anzeigen und Aufzeichnen von sehr kleinen Gleichspannungen oder Gleichstroemen, insbesondere fuer Alarm- oder Regelungszwecke
摘要
申请公布号
DE515012(C)
申请公布日期
1930.12.23
申请号
DE1926I028519D
申请日期
1926.07.09
申请人
I.G. FARBENINDUSTRIE AKT.-GES.
发明人
GMELIN DR. PAUL
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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