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发明名称
Multifocal ophthalmic lens
摘要
申请公布号
US2274143(A)
申请公布日期
1942.02.24
申请号
US19400365052
申请日期
1940.11.09
申请人
THE REVALENS CO.
发明人
HOUCHIN LOWELL L.
分类号
G02C7/06
主分类号
G02C7/06
代理机构
代理人
主权项
地址
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