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发明名称
Dypvanns-stigerörssammenstilling
摘要
申请公布号
NO964922(D0)
申请公布日期
1996.11.19
申请号
NO19960004922
申请日期
1996.11.19
申请人
HYDRIL CO
发明人
REYNOLDS, GRAEME E.
分类号
E21B17/00;E21B17/01;E21B33/038;E21B33/06;E21B33/064;(IPC1-7):E21B
主分类号
E21B17/00
代理机构
代理人
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地址
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