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发明名称
REVERSE-STROKE EXPANDER
摘要
申请公布号
SU717323(A1)
申请公布日期
1980.02.25
申请号
SU19782590136
申请日期
1978.03.07
申请人
KUZBASSKIJ POLT INSTITUT
发明人
SAFOKHIN MIKHAIL S,SU;BOGOMOLOV IGOR D,SU;NACHEV KONSTANTIN V,SU;SHCHERBAKOV YURIJ S,SU;TSEKHIN ALEKSANDR M,SU
分类号
E21B7/28;E21B10/26;(IPC1-7):E21C17/00
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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