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发明名称
Matériau à haute résistance à l'usure et aux chocs ou percussions
摘要
申请公布号
FR686346(A)
申请公布日期
1930.07.24
申请号
FRD686346
申请日期
1929.12.09
申请人
发明人
ROYEN HERMAN JOHAN VAN
分类号
C22C38/00
主分类号
C22C38/00
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