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发明名称
Verfahren zur elektrischen Bodenerforschung mittels dem Untergrund induktiv zugefuehrter Wechselstroeme und Ausmessung des elliptisch polarisierten magnetischen Feldes durch Suchspulen
摘要
申请公布号
DE494831(C)
申请公布日期
1930.03.27
申请号
DE1926A048205D
申请日期
1926.07.06
申请人
DR. RICHARD AMBRONN
发明人
分类号
G01V3/06
主分类号
G01V3/06
代理机构
代理人
主权项
地址
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