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发明名称
JUNTA ACODADA MEJORADA DE ANGULO VARIABLE PARA PERFORADOS DIRIGIDOS
摘要
申请公布号
MX6547(E)
申请公布日期
1985.07.10
申请号
MX19790100012U
申请日期
1979.07.23
申请人
INSTITUT FRANCAIS DU PETROLE
发明人
JEAN PAUL NGUYEN;EMMANUEL LAVAL;ANDRE CENDRE
分类号
(IPC1-7):E21C9/00
主分类号
(IPC1-7):E21C9/00
代理机构
代理人
主权项
地址
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