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发明名称
ANORDNING FOR OVERDEKKING AV ET FORLATT UNDERVANNS-BROENNHODE
摘要
申请公布号
NO921605(D0)
申请公布日期
1992.04.24
申请号
NO19920001605
申请日期
1992.04.24
申请人
COOPER INDUSTRIES INC
发明人
HELLAND, LEO
分类号
E21B;E21B33/037;(IPC1-7):E21B/
主分类号
E21B
代理机构
代理人
主权项
地址
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