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发明名称
Vision aid
摘要
申请公布号
GB9812859(D0)
申请公布日期
1998.08.12
申请号
GB19980012859
申请日期
1998.06.16
申请人
WARDROPE, JAMES
发明人
分类号
主分类号
代理机构
代理人
主权项
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