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发明名称
Magnetic levitation propulsion train teaching tool
摘要
申请公布号
KR20090006060(U)
申请公布日期
2009.06.18
申请号
KR20070020139U
申请日期
2007.12.14
申请人
发明人
分类号
G09B23/18;G09B23/08
主分类号
G09B23/18
代理机构
代理人
主权项
地址
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