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发明名称
Lunettes oculaires composites permettant de modifier leurs caractéristiques le long de leur étendue
摘要
申请公布号
FR1029150(A)
申请公布日期
1953.06.01
申请号
FRD1029150
申请日期
1950.12.06
申请人
L. CRETIN-BILLET & FILS
发明人
分类号
G02C7/10
主分类号
G02C7/10
代理机构
代理人
主权项
地址
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