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经营范围
发明名称
Perfectionnements aux lentilles destinées à des usages optiques
摘要
申请公布号
FR927097(A)
申请公布日期
1947.10.20
申请号
FRD927097
申请日期
1946.05.20
申请人
BARR AND STROUD, LIMITED
发明人
分类号
G02B3/04
主分类号
G02B3/04
代理机构
代理人
主权项
地址
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