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发明名称
mÉtodo e aparelho para liberar cabos fixados a uma ferramenta de poÇo.
摘要
申请公布号
BR0215916(B8)
申请公布日期
2013.02.19
申请号
BR20020215916
申请日期
2002.10.24
申请人
发明人
JORGEN HALLUNDBAEK
分类号
E21B29/04;E21B29/02
主分类号
E21B29/04
代理机构
代理人
主权项
地址
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