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发明名称
Apparatus for treating wells
摘要
申请公布号
US2642139(A)
申请公布日期
1953.06.16
申请号
US19460665131
申请日期
1946.04.26
申请人
STANOLIND OIL AND GAS COMPANY
发明人
BEDFORD CHARLES F.
分类号
E21B41/02
主分类号
E21B41/02
代理机构
代理人
主权项
地址
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