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发明名称
WRENCHING TONG
摘要
申请公布号
EP1232323(B1)
申请公布日期
2004.10.13
申请号
EP20000976168
申请日期
2000.11.17
申请人
WEATHERFORD/LAMB, INC.
发明人
PIETRAS, BERND-GEORG
分类号
E21B19/16;(IPC1-7):E21B19/16
主分类号
E21B19/16
代理机构
代理人
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地址
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