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发明名称
FLUID FLOW MONITORING SYSTEM FOR WELL DRILLING OPERATIONS
摘要
申请公布号
US3602322(A)
申请公布日期
1971.08.31
申请号
USD3602322
申请日期
1968.10.24
申请人
DALE C. GORSUCH
发明人
DALE C. GORSUCH
分类号
E21B21/08;(IPC1-7):E21B21/04
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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