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发明名称
Device for grinding bottoms of circular chasers
摘要
申请公布号
US1952206(A)
申请公布日期
1934.03.27
申请号
US19310552853
申请日期
1931.07.24
申请人
THE NATIONAL ACME COMPANY
发明人
HOGG WILLIAM J.
分类号
B24B19/02
主分类号
B24B19/02
代理机构
代理人
主权项
地址
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