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发明名称
Centralising device
摘要
申请公布号
EP0823536(B1)
申请公布日期
2005.08.31
申请号
EP19970304277
申请日期
1997.06.18
申请人
SWIETLIK, GEORGE
发明人
SWIETLIK, GEORGE
分类号
E21B21/00;E21B17/10;(IPC1-7):E21B7/04;E21B17/22
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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