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发明名称
SCALPELLO PER LA PERFORAZIONE DEL TERRENO CON GRUPPO DI TENUTA DEL SOPPORTO PERFEZIONATO.
摘要
申请公布号
IT1284355(B1)
申请公布日期
1998.05.18
申请号
IT1996TO00058
申请日期
1996.01.30
申请人
BAKER HUGHES INCORPORATED;PARCO, INCORPORATED
发明人
KIRK PHILIP B.;DOLEZAL GEORGE E.;CAMPBELL RONALD R.
分类号
E21B10/22;E21B10/25
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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