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经营范围
发明名称
MUFFESKJOET
摘要
申请公布号
NO831464(A)
申请公布日期
1983.10.31
申请号
NO19830001464
申请日期
1983.04.26
申请人
DRIL QUIP INC
发明人
REIMERT LARRY E
分类号
E21B17/042;E21B17/08;F16L15/00;F16L15/04;F16L15/06;(IPC1-7):F16L/
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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