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发明名称
ABRASIVE ARTICLE
摘要
申请公布号
CA406207(A)
申请公布日期
1942.07.21
申请号
CAD406207
申请日期
申请人
THE CARBORUNDUM COMPANY
发明人
AVERY WALDEN WALKER
分类号
主分类号
代理机构
代理人
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