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发明名称
ADJUSTABLE SPECTACLES
摘要
申请公布号
GB2052086(A)
申请公布日期
1981.01.21
申请号
GB19800016754
申请日期
1980.05.21
申请人
BURTON AF
发明人
分类号
G02C5/04;G02C1/08;G02C7/06;G02C7/08;(IPC1-7):G02C7/08
主分类号
G02C5/04
代理机构
代理人
主权项
地址
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