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发明名称
DUMPER LONGITUDINAL AND TORSIONAL OSCILLATIONS
摘要
申请公布号
SU1579975(A1)
申请公布日期
1990.07.23
申请号
SU19884442086
申请日期
1988.06.14
申请人
BASHKIRSKIJ GNI PI NEFTYANOJ
发明人
YANTURIN ALFRED SH,SU
分类号
E21B17/07
主分类号
E21B17/07
代理机构
代理人
主权项
地址
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