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经营范围
发明名称
Grinding device
摘要
申请公布号
US2108630(A)
申请公布日期
1938.02.15
申请号
US19360092741
申请日期
1936.07.27
申请人
THE CARBORUNDUM COMPANY
发明人
WALKER AVERY W.
分类号
B24D7/16
主分类号
B24D7/16
代理机构
代理人
主权项
地址
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