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发明名称
TEACHING DEVICE
摘要
申请公布号
SU936008(A1)
申请公布日期
1982.06.15
申请号
SU19792886532
申请日期
1979.12.14
申请人
VOKHMYANIN VLADISLAV G,SU
发明人
VOKHMYANIN VLADISLAV G,SU
分类号
G09B7/00;G09B19/00;(IPC1-7):G09B7/00
主分类号
G09B7/00
代理机构
代理人
主权项
地址
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