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发明名称
摘要
申请公布号
SE344650(B)
申请公布日期
1972.04.24
申请号
SE19700014362
申请日期
1970.10.23
申请人
NI INST OBSCHEI PEDAGOGI PSIKHOLOGI AKADEMI NAUK
发明人
SHENSHEY L
分类号
G09B5/06;(IPC1-7):G09B5/06
主分类号
G09B5/06
代理机构
代理人
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地址
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