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经营范围
发明名称
TEACHING AIDS
摘要
申请公布号
JPS5249126(A)
申请公布日期
1977.04.19
申请号
JP19750121961
申请日期
1975.10.09
申请人
RIYUU KOUKIN;RIYUU RANCHI
发明人
RIYUU KOUKIN;RIYUU RANCHI
分类号
G09B3/06;G09B3/10
主分类号
G09B3/06
代理机构
代理人
主权项
地址
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