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发明名称
DEVICE FOR CHECKING KNOWLEDGE
摘要
申请公布号
SU1571639(A1)
申请公布日期
1990.06.15
申请号
SU19884477795
申请日期
1988.08.23
申请人
ROZHKOV STANISLAV M,SU
发明人
ROZHKOV STANISLAV M,SU
分类号
G09B7/02
主分类号
G09B7/02
代理机构
代理人
主权项
地址
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