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发明名称
' ' PREVENTOR DE ERUPÇÃO DO TIPO GAVETA; E MÉTODO DE ATUAÇÃO DE UM PREVENTOR DE ERUPÇÃO DO TIPO GAVETA ' '
摘要
申请公布号
BRPI0717915(A2)
申请公布日期
2013.11.05
申请号
BR2007PI17915
申请日期
2007.12.10
申请人
HYDRIL USA MANUFACTURING LLC
发明人
JOHN DAVID JUDA;CHARLES EUGENE CHAUVIERE
分类号
E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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