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经营范围
发明名称
Perfectionnement apporté aux appareils destinés à regarder sous l'eau
摘要
申请公布号
FR978060(A)
申请公布日期
1951.04.09
申请号
FRD978060
申请日期
1948.11.15
申请人
发明人
MARTINEAU PIERRE-ANDRE
分类号
G02B5/22
主分类号
G02B5/22
代理机构
代理人
主权项
地址
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