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发明名称
APARAT DIDACTIC PENTRU INVATAREA ARITMETICII
摘要
申请公布号
RO91078(A2)
申请公布日期
1987.02.27
申请号
RO19840116432
申请日期
1984.11.27
申请人
GIURGINCA GHEORGHE,RO
发明人
GIURGINCA GHEORGHE,RO
分类号
G06C1/00;(IPC1-7):G06C1/00
主分类号
G06C1/00
代理机构
代理人
主权项
地址
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