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发明名称
TEACHING DEVICE
摘要
申请公布号
SU842929(A1)
申请公布日期
1981.06.30
申请号
SU19792820315
申请日期
1979.07.27
申请人
MI RADIOTEKHNICHESKIJ INSTITUT
发明人
VENCHATSKIJ LEONID YA,SU;MOROZ SERGEJ M,SU;TRUBITSYN LEONID M,SU
分类号
G09B9/00;(IPC1-7):G09B9/00
主分类号
G09B9/00
代理机构
代理人
主权项
地址
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