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发明名称
Multifocal lens
摘要
申请公布号
US2328584(A)
申请公布日期
1943.09.07
申请号
US19400344262
申请日期
1940.07.06
申请人
RONES HARVEY C
发明人
RONES HARVEY C.
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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