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经营范围
发明名称
Improvements in or relating to optical lenses
摘要
申请公布号
GB876798(A)
申请公布日期
1961.09.06
申请号
GB19570031201
申请日期
1957.10.04
申请人
COMPAGNIE DE SAINT-GOBAIN
发明人
分类号
G02C7/02
主分类号
G02C7/02
代理机构
代理人
主权项
地址
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