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发明名称
DEVICE FOR EVALUATING ANSWERS OF PUPILS
摘要
申请公布号
SU796902(A1)
申请公布日期
1981.01.15
申请号
SU19792731330
申请日期
1979.02.21
申请人
KUDRYASHOV NIKOLAJ ,SU;CHIZHOV ALEKSANDR YU,SU
发明人
KUDRYASHOV NIKOLAJ ,SU;CHIZHOV ALEKSANDR YU,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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