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发明名称
BOHRLOCHFANGGLOCKE
摘要
申请公布号
DE69833431(D1)
申请公布日期
2006.04.20
申请号
DE19986033431
申请日期
1998.04.09
申请人
WEATHERFORD/LAMB, INC.
发明人
GAMPER, WILLIAM;GARDUNO, BRIAN
分类号
E21B31/18
主分类号
E21B31/18
代理机构
代理人
主权项
地址
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