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发明名称
Drill stem testing apparatus
摘要
申请公布号
US3351135(A)
申请公布日期
1967.11.07
申请号
US19650465482
申请日期
1965.06.21
申请人
JOHNSTON-TESTERS, LTD.
发明人
JENSEN LLOYD I.
分类号
E21B49/08
主分类号
E21B49/08
代理机构
代理人
主权项
地址
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