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经营范围
发明名称
Abrasive grain
摘要
申请公布号
US2303284(A)
申请公布日期
1942.11.24
申请号
US19400342441
申请日期
1940.06.26
申请人
NORTON COMPANY
发明人
KLEIN ABRAHAM ALBERT
分类号
C09K3/14
主分类号
C09K3/14
代理机构
代理人
主权项
地址
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