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经营范围
发明名称
Hydraulic pulling tool
摘要
申请公布号
US2915126(A)
申请公布日期
1959.12.01
申请号
US19500139267
申请日期
1950.01.18
申请人
CICERO C. BROWN
发明人
POTTS ERNEST L.
分类号
E21B23/04;E21B31/20
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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