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发明名称
Maths set
摘要
申请公布号
GB2249058(A)
申请公布日期
1992.04.29
申请号
GB19910008704
申请日期
1991.04.23
申请人
* HELIX LIMITED
发明人
ANDREW BRENNAN * BONES;TIMOTHY ALFRED * REDDING
分类号
B43K31/00
主分类号
B43K31/00
代理机构
代理人
主权项
地址
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