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发明名称
Presbyopic contact lens
摘要
A contact lens to correct presbyopia provides a distance correction at the center, increas
申请公布号
US4418991(A)
申请公布日期
1983.12.06
申请号
US19800157399
申请日期
1980.06.09
申请人
BREGER, JOSEPH L.
发明人
BREGER, JOSEPH L.
分类号
G02C7/04;(IPC1-7):G02C7/04;G02C7/06
主分类号
G02C7/04
代理机构
代理人
主权项
地址
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