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经营范围
发明名称
Tube catcher sub
摘要
申请公布号
US2145192(A)
申请公布日期
1939.01.24
申请号
US19370120157
申请日期
1937.01.12
申请人
HARRY PENNINGTON
发明人
PENNINGTON HARRY
分类号
E21B25/02
主分类号
E21B25/02
代理机构
代理人
主权项
地址
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