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发明名称
IMPROVEMENTS IN OR RELATING TO A TOY OR EDUCATIONAL DEVICE
摘要
申请公布号
GB8913331(D0)
申请公布日期
1989.07.26
申请号
GB19890013331
申请日期
1989.06.09
申请人
INNOTECH CORPORATION
发明人
分类号
G09B5/04;G09B5/06;G09B17/00
主分类号
G09B5/04
代理机构
代理人
主权项
地址
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