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经营范围
发明名称
Educational apparatus
摘要
申请公布号
GB2223343(A)
申请公布日期
1990.04.04
申请号
GB19880018224
申请日期
1988.07.30
申请人
EDNA BEATRICE WEIGELT * VANLINT
发明人
EDNA BEATRICE WEIGELT * VANLINT
分类号
G09B3/04;G09B17/00
主分类号
G09B3/04
代理机构
代理人
主权项
地址
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