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发明名称
BROENN-TETNINGSENHET.
摘要
申请公布号
NO163646(C)
申请公布日期
1990.06.27
申请号
NO19830003017
申请日期
1983.08.22
申请人
CAMERON IRON WORKS INC.
发明人
MCEVER, JAMES P.;LEWANDOWSKI, JAMES
分类号
E21B33/10;E21B33/00;E21B33/03;E21B33/04;E21B33/12;(IPC1-7):F16J15/12
主分类号
E21B33/10
代理机构
代理人
主权项
地址
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