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经营范围
发明名称
GRINDING WHEEL
摘要
申请公布号
CA557068(A)
申请公布日期
1958.05.06
申请号
CAD557068
申请日期
申请人
NORTON COMPANY
发明人
GEORGE E. COMSTOCK, 3D;GEORGE CROMPTON, JR.
分类号
主分类号
代理机构
代理人
主权项
地址
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