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发明名称
Hydraulic earth boring and cyclone separation system
摘要
申请公布号
US2941783(A)
申请公布日期
1960.06.21
申请号
US19570671855
申请日期
1957.07.15
申请人
PHILLIPS PETROLEUM COMPANY
发明人
STINSON DONALD L.
分类号
E21B21/06
主分类号
E21B21/06
代理机构
代理人
主权项
地址
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