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发明名称
Jet rock bit
摘要
申请公布号
US3014544(A)
申请公布日期
1961.12.26
申请号
US19590828892
申请日期
1959.07.22
申请人
CHICAGO PNEUMATIC TOOL COMPANY
发明人
STEEN JAMES B.
分类号
E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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