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经营范围
发明名称
Improved construction of rimless spectacles
摘要
申请公布号
GB640977(A)
申请公布日期
1950.08.02
申请号
GB19480010926
申请日期
1948.04.20
申请人
FREDERICK CARL HALDANE WERNER
发明人
分类号
G02C1/02
主分类号
G02C1/02
代理机构
代理人
主权项
地址
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