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发明名称
Drill head
摘要
申请公布号
US2663202(A)
申请公布日期
1953.12.22
申请号
US19510237433
申请日期
1951.07.18
申请人
LEE ENGINEERING COMPANY
发明人
LEE ROYAL
分类号
B23B39/08
主分类号
B23B39/08
代理机构
代理人
主权项
地址
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