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经营范围
发明名称
Stigerörkobling
摘要
申请公布号
NO965619(D0)
申请公布日期
1996.12.30
申请号
NO19960005619
申请日期
1996.12.30
申请人
DRIL-QUIP INC
发明人
WATKINS, BRUCE J.
分类号
E21B;E21B17/01;E21B17/046
主分类号
E21B
代理机构
代理人
主权项
地址
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