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发明名称
Anordnung zur Sichtbarmachung magnetischer Felder mit Hilfe einer in ein Pruefgefaess eingebrachten ferromagnetischen Suspension
摘要
申请公布号
DE680851(C)
申请公布日期
1939.09.08
申请号
DE1937U014077D
申请日期
1937.11.14
申请人
DR. TECHN. FRANZ UNGER;DR. RICHARD SIEGFRIED HILPERT
发明人
UNGER DR. TECHN. FRANZ;HILPERT DR. RICHARD SIEGFRIED
分类号
G09B23/18
主分类号
G09B23/18
代理机构
代理人
主权项
地址
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