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发明名称
Tubing head
摘要
申请公布号
US2073890(A)
申请公布日期
1937.03.16
申请号
US19350015035
申请日期
1935.04.06
申请人
TSCHAPPAT SHERIDAN P
发明人
TSCHAPPAT SHERIDAN P.
分类号
E21B33/06
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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