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经营范围
发明名称
Lyeglass structure
摘要
申请公布号
US1914971(A)
申请公布日期
1933.06.20
申请号
US19290390237
申请日期
1929.09.04
申请人
FERRIS WILLIAM W
发明人
FERRIS WILLIAM W.
分类号
G02C3/00;G02C5/04;G02C5/06
主分类号
G02C3/00
代理机构
代理人
主权项
地址
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