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经营范围
发明名称
Matériel didactique.
摘要
申请公布号
BE613452(A1)
申请公布日期
1962.05.29
申请号
BE19620613452
申请日期
1962.02.02
申请人
ALBERT MATHIEU
发明人
ALBERT MATHIEU
分类号
(IPC1-7):G09B
主分类号
(IPC1-7):G09B
代理机构
代理人
主权项
地址
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