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发明名称
DEVICE FOR CHECKING ANSWERS OF STUDENTS
摘要
申请公布号
SU1092552(A2)
申请公布日期
1984.05.15
申请号
SU19823432831
申请日期
1982.05.04
申请人
INST SOTSIALNO-EKONOMICHESKIKH PROBLEM AN SSSR
发明人
GAJDUKOVA LIDIYA M,SU;KANEVSKIJ EVGENIJ A,SU;MARAKHOVSKIJ VLADIMIR B,SU;TSYBULEVA VALDEMARA M,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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