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发明名称
BROENNHODEANORDNING.
摘要
申请公布号
NO901976(D0)
申请公布日期
1990.05.03
申请号
NO19900001976
申请日期
1990.05.03
申请人
DRIL-QUIP INC
发明人
REIMERT, LARRY E.
分类号
E21B33/038;F16L17/10;F16L37/00;F16L37/12;(IPC1-7):E21B/
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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