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经营范围
发明名称
VERKTOEY FOR SIMULTANE VERTIKALE KOBLINGER
摘要
申请公布号
NO913983(D0)
申请公布日期
1991.10.10
申请号
NO19910003983
申请日期
1991.10.10
申请人
PETROLEO BRASILEIRO SA - PETROBRAS;CONFORJA EQUIPETROL SA
发明人
MOTA, JUVENAL DIONISIO SOUZA
分类号
E21B43/013;(IPC1-7):E21B/
主分类号
E21B43/013
代理机构
代理人
主权项
地址
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