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发明名称
TEACHING DEVICE
摘要
申请公布号
SU744711(A1)
申请公布日期
1980.06.30
申请号
SU19782584649
申请日期
1978.03.01
申请人
ALEKSANDROV VLADIMIR K,SU;ZUBKO VIKTOR ,SU
发明人
ALEKSANDROV VLADIMIR K,SU;ZUBKO VIKTOR ,SU
分类号
G09B7/02;(IPC1-7):G09B7/02
主分类号
G09B7/02
代理机构
代理人
主权项
地址
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