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经营范围
发明名称
Spectacle lens
摘要
申请公布号
US2109474(A)
申请公布日期
1938.03.01
申请号
US19310579451
申请日期
1931.12.07
申请人
ERNEST EVANS CHARLES
发明人
EVANS CHARLES ERNEST
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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