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发明名称
ΤΡΙΠΛΟΥΝ ΜΑΘΗΤΙΚΟΝ ΑΡΙΘΜΗΤΗΡΙΟΝ.
摘要
申请公布号
GR22969(B)
申请公布日期
1962.03.15
申请号
GR19620122969
申请日期
1962.03.06
申请人
DIAKOGIANNIS IOULIOS
发明人
DIAKOGIANNIS IOULIOS
分类号
主分类号
代理机构
代理人
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