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发明名称
ANORDNING FOR AA SIKRE ET ROERELEMENT MOT AKSIELL ROTASJON
摘要
申请公布号
NO801245(A)
申请公布日期
1980.10.31
申请号
NO19800001245
申请日期
1980.04.29
申请人
ECKEL MANUFACTURING CO., INC.,
发明人
MOONEY, TOMMY RAY,
分类号
E21B19/16;(IPC1-7):E21B/
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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