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经营范围
发明名称
Wellhead bowl protector
摘要
申请公布号
GB2254635(B)
申请公布日期
1994.09.28
申请号
GB19920007088
申请日期
1992.03.31
申请人
* FMC CORPORATION
发明人
BASHIR M * KOLEILAT
分类号
E21B17/10;E21B33/04;(IPC1-7):E21B33/03;E21B17/12
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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