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发明名称
MECHANICAL EXPANDER
摘要
申请公布号
SU657165(A1)
申请公布日期
1979.04.15
申请号
SU19762391019
申请日期
1976.07.23
申请人
KAZAKHSKIJ POLT I IM.V.I.LENINA
发明人
KIM MOISEJ F,SU;GRAUR IVAN F,SU;LI SERGEJ K,SU;BOYARINOV YURIJ ,SU
分类号
E21B7/28;(IPC1-7):E21B9/28
主分类号
E21B7/28
代理机构
代理人
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