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发明名称
TEACHING DEVICE
摘要
申请公布号
SU662955(A1)
申请公布日期
1979.05.15
申请号
SU19772439836
申请日期
1977.01.10
申请人
KI POLT I IM. 50-LETIYA VELIKOJ SOTSIALISTICHESKOJ REVOLYUTSII
发明人
KORNEJCHUK VIKTOR ,SU;ESKENAZI AVRAM M,SU;SAYUK EVGENIJ K,SU;TODOROVA MARGARITA K,SU;TODOROV GEORGI S,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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