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经营范围
发明名称
EDUCATIONAL AID
摘要
申请公布号
ZA8807004(B)
申请公布日期
1989.05.30
申请号
ZA19880007004
申请日期
1988.09.21
申请人
JAFTHA HENRY BARENDS
发明人
JAFTHA HENRY BARENDS
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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