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发明名称
BROENNHODEUTSTYR.
摘要
申请公布号
NO903900(D0)
申请公布日期
1990.09.06
申请号
NO19900003900
申请日期
1990.09.06
申请人
DRIL-QUIP INC
发明人
REIMERT, LARRY E.
分类号
E21B;E21B33/043;(IPC1-7):E21B/
主分类号
E21B
代理机构
代理人
主权项
地址
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