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经营范围
发明名称
A simplified sealing and anchoring device for a well tool
摘要
申请公布号
GB2317906(A)
申请公布日期
1998.04.08
申请号
GB19970023865
申请日期
1996.04.16
申请人
* CAMCO INC.
发明人
RONALD EARL * PRINGLE
分类号
E21B23/01;E21B33/12;E21B33/128;E21B33/129;(IPC1-7):E21B23/00;E21B33/134
主分类号
E21B23/01
代理机构
代理人
主权项
地址
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