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发明名称
Fresesystem for borehull
摘要
申请公布号
NO990919(A)
申请公布日期
1999.05.11
申请号
NO19990000919
申请日期
1999.02.26
申请人
WEATHERFORD/LAMB INC
发明人
ADKINS, COURTNEY W.;CARTER, THURMAN BEAMER;BLIZZARD, WILLIAM ALLEN;WARD, RICHARD M.;ROBERTS, JOHN D.
分类号
E21B21/10;E21B23/00;E21B23/04;E21B29/06;E21B34/10;(IPC1-7):E21B29/06;E21B7/08
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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