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发明名称
A calculator design for special learning needs
摘要
申请公布号
GB9425518(D0)
申请公布日期
1995.02.15
申请号
GB19940025518
申请日期
1994.12.16
申请人
COVENTRY UNIVERSITY HIGHER EDUCATION CORPORATION
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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