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发明名称
Detachable bridge-brace-bar spectacle construction
摘要
申请公布号
US2458963(A)
申请公布日期
1949.01.11
申请号
US19460642890
申请日期
1946.01.23
申请人
STEVENS FREDERICK A
发明人
STEVENS FREDERICK A.
分类号
G02C1/02;G02C1/04
主分类号
G02C1/02
代理机构
代理人
主权项
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