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发明名称
Method for removing oil from wells
摘要
申请公布号
US2225949(A)
申请公布日期
1940.12.24
申请号
US19360093941
申请日期
1936.08.03
申请人
CONTINENTAL OIL COMPANY
发明人
BENNETT EDWIN O.
分类号
E21B43/34
主分类号
E21B43/34
代理机构
代理人
主权项
地址
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