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发明名称
SYSTEM TIL BRUK VED DRIFT OG VEDLIKEHOLD AV BROENNER
摘要
申请公布号
NO792665(A)
申请公布日期
1980.02.19
申请号
NO19790002665
申请日期
1979.08.15
申请人
OTIS ENGINEERING CORP,
发明人
PEARCE, JOSEPH L.,;REAGAN, JAMES E.,
分类号
E21B23/08;E21B43/017;(IPC1-7):E21B/
主分类号
E21B23/08
代理机构
代理人
主权项
地址
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