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发明名称
DEVICE FOR CHECKING KNOWLEDGE LEVELS OF TRAINEES
摘要
申请公布号
SU1249564(A1)
申请公布日期
1986.08.07
申请号
SU19843821070
申请日期
1984.12.06
申请人
ROZHKOV STANISLAV M,SU;ROZHKOV SERGEJ S,SU
发明人
ROZHKOV STANISLAV M,SU;ROZHKOV SERGEJ S,SU
分类号
G09B7/07
主分类号
G09B7/07
代理机构
代理人
主权项
地址
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