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发明名称
Experimentierkasten fuer Versuche aus der Lehre der elektrischen Schwingungen
摘要
申请公布号
DE571411(C)
申请公布日期
1933.03.02
申请号
DE1928F067059D
申请日期
1928.10.21
申请人
WILHELM FROEHLICH
发明人
分类号
G09B23/18
主分类号
G09B23/18
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代理人
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