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发明名称
Ophthalmic device
摘要
申请公布号
US2273434(A)
申请公布日期
1942.02.17
申请号
US19400341279
申请日期
1940.06.19
申请人
JOHN Q. A. HALLOWAY;JAMES J. RYAN
发明人
BURCHELL FFORD
分类号
G02C3/00;G02C5/12
主分类号
G02C3/00
代理机构
代理人
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地址
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