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发明名称
ELEMENTI DI SUPPORTO PER PUNTE DA TRIVELLAZIONE, PUNTE DA TRIVELLAZIONE PROVVISTE DI TALI ELEMENTI, PROCEDIMENTO DI TRIVELLAZIONE E METODO DI PROGETTO DI UNA PUNTA DA TRIVELLAZIONE.
摘要
申请公布号
ITTO20020718(A1)
申请公布日期
2003.02.14
申请号
IT2002TO00718
申请日期
2002.08.12
申请人
BAKER HUGHES INCORPORATED
发明人
SWADI MOHAMMAD
分类号
E21B;E21B10/42;E21B10/43;E21B10/46
主分类号
E21B
代理机构
代理人
主权项
地址
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