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经营范围
发明名称
ABRASIVE TOUGHNESS DETERMINING APPARATUS
摘要
申请公布号
CA334485(A)
申请公布日期
1933.08.01
申请号
CAD334485
申请日期
申请人
THE CARBORUNDUM COMPANY
发明人
RAYMOND CALVIN BENNER;ROMIE LEE MELTON
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主分类号
代理机构
代理人
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