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发明名称
Sunglass attachment for eyeglasses
摘要
申请公布号
US2159710(A)
申请公布日期
1939.05.23
申请号
US19360070687
申请日期
1936.03.24
申请人
LIBERTY OPTICAL COMPANY, INC.
发明人
REICHERT ELLSWORTH
分类号
G02C9/04
主分类号
G02C9/04
代理机构
代理人
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