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发明名称
TETNING FOR BROENNHODE.
摘要
申请公布号
NO881874(A)
申请公布日期
1988.10.31
申请号
NO19880001874
申请日期
1988.04.29
申请人
CAMERON IRON WORKS USA INC
发明人
CASSITY, THOMAS G.
分类号
E21B33/03;E21B33/00;E21B33/04;F16J15/48;(IPC1-7):E21B/
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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