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经营范围
发明名称
Doublet constitué par deux lentilles à échelons identiques
摘要
申请公布号
FR1010556(A)
申请公布日期
1952.06.12
申请号
FRD1010556
申请日期
1948.09.10
申请人
SOCIETE ANONYME HOLOPHANE
发明人
分类号
G02B3/08
主分类号
G02B3/08
代理机构
代理人
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地址
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