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发明名称
TEACHING DEVICE
摘要
申请公布号
SU1032473(A1)
申请公布日期
1983.07.30
申请号
SU19823418319
申请日期
1982.04.09
申请人
BRUSS NI PT I ORGANIZATSII U STROITELSTVOM
发明人
PILIPEJKO LEONID G,SU;ILIN OLEG P,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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