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发明名称
Stützring
摘要
申请公布号
DE69223623(T2)
申请公布日期
1998.06.18
申请号
DE19926023623T
申请日期
1992.10.16
申请人
COOPER CAMERON CORP., HOUSTON, TEX., US
发明人
THORNBURROW, EDWARD THOMAS, LEEDS, WEST YORKSHIRE LS7 3DR, GB
分类号
E21B33/04;(IPC1-7):E21B33/04
主分类号
E21B33/04
代理机构
代理人
主权项
地址
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