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发明名称
Well tool
摘要
申请公布号
US3020958(A)
申请公布日期
1962.02.13
申请号
US19580743697
申请日期
1958.06.23
申请人
JERSEY PRODUCTION RESEARCH COMPANY
发明人
KENNEDAY JOHN W.
分类号
E21B37/00
主分类号
E21B37/00
代理机构
代理人
主权项
地址
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