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经营范围
发明名称
Spectacle attachment
摘要
申请公布号
US2900639(A)
申请公布日期
1959.08.25
申请号
US19550542177
申请日期
1955.10.24
申请人
LINDSTROM EVERT P
发明人
LINDSTROM EVERT P.
分类号
G02C7/16
主分类号
G02C7/16
代理机构
代理人
主权项
地址
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