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经营范围
发明名称
Well casing gun
摘要
申请公布号
US2593866(A)
申请公布日期
1952.04.22
申请号
US19470784021
申请日期
1947.11.04
申请人
PHILLIPS PETROLEUM COMPANY
发明人
EVANS WALTER R.
分类号
E21B43/116
主分类号
E21B43/116
代理机构
代理人
主权项
地址
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