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发明名称
Tubing anchor
摘要
申请公布号
US2698058(A)
申请公布日期
1954.12.28
申请号
US19490121551
申请日期
1949.10.15
申请人
PAGE OIL TOOLS INC.
发明人
PAGE JOHN S.
分类号
E21B23/04
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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