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发明名称
Ophthalmological teaching aid
摘要
申请公布号
GB2238898(A)
申请公布日期
1991.06.12
申请号
GB19900026550
申请日期
1990.12.06
申请人
WILLIAM DAVID * ALEXANDER
发明人
WILLIAM DAVID * ALEXANDER
分类号
G09B23/30
主分类号
G09B23/30
代理机构
代理人
主权项
地址
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