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发明名称
Elektrische Maschine fuer Lehrzwecke
摘要
申请公布号
DE540559(C)
申请公布日期
1931.12.21
申请号
DENDATSC82705D
申请日期
申请人
ALFRED SCHIEBER
发明人
分类号
G09B23/18
主分类号
G09B23/18
代理机构
代理人
主权项
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