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发明名称
摘要
申请公布号
JP3146246(U)
申请公布日期
2008.11.06
申请号
JP20080006066U
申请日期
2008.08.28
申请人
发明人
分类号
G09B19/12;G04B39/00
主分类号
G09B19/12
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