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发明名称
Improvements in process of making steel abrasive material
摘要
申请公布号
GB361383(A)
申请公布日期
1931.11.19
申请号
GB19300015361
申请日期
1930.05.19
申请人
THE GLOBE STEEL ABRASIVE COMPANY
发明人
分类号
B22F9/08
主分类号
B22F9/08
代理机构
代理人
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