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发明名称
TARIERE
摘要
申请公布号
BE888086(A1)
申请公布日期
1981.07.16
申请号
BE19812059072
申请日期
1981.03.24
申请人
PERRONE PIERO
发明人
分类号
E21B10/44;E21B11/00;E21B17/07;(IPC1-7):E02F/;E03B/
主分类号
E21B10/44
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代理人
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