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发明名称
ABRASIVE PRODUCT
摘要
申请公布号
CA459810(A)
申请公布日期
1949.09.20
申请号
CAD459810
申请日期
申请人
THE CARBORUNDUM COMPANY
发明人
NORMAN PIERCE ROBIE
分类号
主分类号
代理机构
代理人
主权项
地址
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