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发明名称
TEACHING AIDS PREPARING SYSTEM
摘要
申请公布号
JPH0371179(A)
申请公布日期
1991.03.26
申请号
JP19890207345
申请日期
1989.08.10
申请人
MITSUBISHI ELECTRIC CORP
发明人
IWAGAMI KATSUYOSHI
分类号
G09B5/00
主分类号
G09B5/00
代理机构
代理人
主权项
地址
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