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发明名称
Drill bit with insert
摘要
申请公布号
US3198270(A)
申请公布日期
1965.08.03
申请号
US19630268127
申请日期
1963.03.26
申请人
HORVATH TOOL AND MANUFACTURING COMPANY
发明人
HORVATH PAUL M.
分类号
E21B10/58
主分类号
E21B10/58
代理机构
代理人
主权项
地址
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