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发明名称
Ledekile
摘要
申请公布号
NO974287(D0)
申请公布日期
1997.09.17
申请号
NO19970004287
申请日期
1997.09.17
申请人
WEATHERFORD/LAMB INC
发明人
CARTER, THURMAN B.
分类号
E21B7/06;E21B7/08;E21B10/50;E21B10/60;E21B12/04;E21B23/00;E21B23/01;E21B23/02;E21B29/06;E21B49/06;(IPC1-7):E21B
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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