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发明名称
IMPROVEMENTS IN SPECTACLES
摘要
申请公布号
GB9026021(D0)
申请公布日期
1991.01.16
申请号
GB19900026021
申请日期
1990.11.29
申请人
GLICK, DEREK
发明人
分类号
G02C7/00;G02C7/08;G02C9/02
主分类号
G02C7/00
代理机构
代理人
主权项
地址
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