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发明名称
Improvements in foldable spectacles
摘要
申请公布号
GB632173(A)
申请公布日期
1949.11.17
申请号
GB19460031525
申请日期
1946.10.23
申请人
GIANNI VIGANO
发明人
分类号
G02C5/00;G02C5/14;G02C5/22
主分类号
G02C5/00
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代理人
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