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发明名称
DEVICE FOR TEACHING AND EXAMINING PUPILS
摘要
申请公布号
SU726566(A2)
申请公布日期
1980.04.05
申请号
SU19782583548
申请日期
1978.03.01
申请人
KOLODYAZHNYJ KONSTANTIN K,SU;KAZAKOV VALENTIN P,SU;ROZHKOV STANISLAV M,SU;ROZHKOV SERGEJ S,SU
发明人
KOLODYAZHNYJ KONSTANTIN K,SU;KAZAKOV VALENTIN P,SU;ROZHKOV STANISLAV M,SU;ROZHKOV SERGEJ 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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