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发明名称
PROCESSO E SISTEMA PARA CONTROLAR VIBRACOES EM EQUIPAMENTO DE PERFURACAO
摘要
申请公布号
BR9100660(A)
申请公布日期
1991.10.29
申请号
BR19919100660
申请日期
1991.02.19
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
ROBERT NICHOLAS WORRALL;IVO PETRUS JOZEF MARIA STULMEIJER;JOHN DIRK JANSEN;BARTHOLOMEUS GERARDUS GOSEWINUS VAN WALSTIJN
分类号
E21B41/00;E21B44/00;E21B47/00;(IPC1-7):E21B7/00
主分类号
E21B41/00
代理机构
代理人
主权项
地址
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