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发明名称
Elektrisk sikkerhetsventil-aktuator
摘要
申请公布号
NO983630(A)
申请公布日期
1998.10.07
申请号
NO19980003630
申请日期
1998.08.07
申请人
BAKER HUGHES INC
发明人
RAWSON, MICHAEL S.;TROTT, DOUG
分类号
E21B34/00;E21B34/06;(IPC1-7):E21B34/06
主分类号
E21B34/00
代理机构
代理人
主权项
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