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发明名称
Grinding machine
摘要
申请公布号
US2815619(A)
申请公布日期
1957.12.10
申请号
US19520320569
申请日期
1952.11.14
申请人
E. I. DU PONT DE NEMOURS AND COMPANY
发明人
BROWNLEY TRENHOLM L.
分类号
B24B3/42
主分类号
B24B3/42
代理机构
代理人
主权项
地址
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