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发明名称
摘要
申请公布号
JP4360000(B2)
申请公布日期
2009.11.11
申请号
JP20000080255
申请日期
2000.03.22
申请人
发明人
分类号
G09B15/00;G10G3/04
主分类号
G09B15/00
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