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发明名称
Hob
摘要
申请公布号
US1760125(A)
申请公布日期
1930.05.27
申请号
US19260107848
申请日期
1926.05.10
申请人
BARBER-COLMAN COMPANY
发明人
EDGAR JOHN
分类号
B23F21/16
主分类号
B23F21/16
代理机构
代理人
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