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经营范围
发明名称
Grinding wheel
摘要
申请公布号
US2119279(A)
申请公布日期
1938.05.31
申请号
US19370133730
申请日期
1937.03.29
申请人
KERR WILLIAM A;GRUBBS ROBERT A
发明人
KERR WILLIAM A.;GRUBBS ROBERT A.
分类号
B24D9/04
主分类号
B24D9/04
代理机构
代理人
主权项
地址
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