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发明名称
Magnetic teaching aid.
摘要
申请公布号
GB2352864(A)
申请公布日期
2001.02.07
申请号
GB20000014246
申请日期
2000.06.13
申请人
ROSEMARY GILLIAN * GREGORY
发明人
ROSEMARY GILLIAN * GREGORY
分类号
G09B1/08;G09B23/02;(IPC1-7):G09B1/08
主分类号
G09B1/08
代理机构
代理人
主权项
地址
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