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发明名称
CLAY FOR TEACHING AIDS
摘要
申请公布号
JPS5251226(A)
申请公布日期
1977.04.25
申请号
JP19750127960
申请日期
1975.10.21
申请人
FUKUI GENICHI
发明人
FUKUI KENJI
分类号
G09B19/10
主分类号
G09B19/10
代理机构
代理人
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