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发明名称
GRINDING WHEEL
摘要
申请公布号
CA363724(A)
申请公布日期
1937.01.26
申请号
CAD363724
申请日期
申请人
THE NORTON COMPANY
发明人
DUANE EARLE WEBSTER
分类号
主分类号
代理机构
代理人
主权项
地址
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