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发明名称
ROHRFOERMIGES BOHRSTRANGELEMENT
摘要
申请公布号
DE3441995(A1)
申请公布日期
1986.03.20
申请号
DE19843441995
申请日期
1984.11.16
申请人
METAL-X CORPORATION OF TEXAS
发明人
KENT RIVES,ALLEN
分类号
E21B17/16;E21B17/22;(IPC1-7):E21B17/22
主分类号
E21B17/16
代理机构
代理人
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