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发明名称
Tool joint
摘要
申请公布号
US2485763(A)
申请公布日期
1949.10.25
申请号
US19460684022
申请日期
1946.07.16
申请人
SIGNAL OIL AND GAS COMPANY
发明人
MOON JAMES
分类号
E21B17/04
主分类号
E21B17/04
代理机构
代理人
主权项
地址
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