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发明名称
Jumelle
摘要
申请公布号
FR727100(A)
申请公布日期
1932.06.13
申请号
FRD727100
申请日期
1931.02.05
申请人
P.-E. VALETTE ET COMPAGNIE
发明人
分类号
G02B23/06
主分类号
G02B23/06
代理机构
代理人
主权项
地址
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