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发明名称
ABRASIVE AND CERAMIC ARTICLE MANUFACTURE
摘要
申请公布号
CA325516(A)
申请公布日期
1932.08.30
申请号
CAD325516
申请日期
申请人
THE CARBORUNDUM COMPANY
发明人
RAYMOND CALVIN BENNER;PRESCOT HOYT WALKER;WILLIAM GEORGE SOLEY
分类号
主分类号
代理机构
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