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经营范围
发明名称
An educational aid
摘要
申请公布号
ZA9805033(B)
申请公布日期
1999.01.18
申请号
ZA19980005033
申请日期
1998.06.10
申请人
BASIL DOYLE
发明人
BASIL DOYLE
分类号
G09B
主分类号
G09B
代理机构
代理人
主权项
地址
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