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发明名称
élément abrasif de nettoyage et son procédé de fabrication
摘要
申请公布号
FR1013284(A)
申请公布日期
1952.07.25
申请号
FRD1013284
申请日期
1950.02.25
申请人
发明人
GRAF GEORGES SAM
分类号
C11D17/04
主分类号
C11D17/04
代理机构
代理人
主权项
地址
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