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经营范围
发明名称
TEACHING AIDS IN DRAWING
摘要
申请公布号
SU1735888(A1)
申请公布日期
1992.05.23
申请号
SU19904835913
申请日期
1990.04.24
申请人
SOKOLOV ALEKSANDR N,SU
发明人
SOKOLOV ALEKSANDR N,SU
分类号
G09B11/00
主分类号
G09B11/00
代理机构
代理人
主权项
地址
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