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经营范围
发明名称
Perfectionnements apportés aux procédés et appareils du genre de ceux utilisant, pour déplacer des matières granuleuses, l'entraînement par un liquide, notamment pour le dragage
摘要
申请公布号
FR972314(A)
申请公布日期
1951.01.29
申请号
FRD972314
申请日期
1941.01.27
申请人
ENTREPRISES METROPOLITAINES & COLONIALES
发明人
分类号
E02F3/94
主分类号
E02F3/94
代理机构
代理人
主权项
地址
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