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发明名称
Dispositif de vidange pour le nettoyage des bassins filtrants
摘要
申请公布号
FR1011220(A)
申请公布日期
1952.06.20
申请号
FRD1011220
申请日期
1948.12.29
申请人
C. CHABAL & COMPAGNIE
发明人
分类号
主分类号
代理机构
代理人
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