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发明名称
DEVICE, FOR AIR INLET AND OUTLET FOR DOWNHOLE PUMPING UNIT
摘要
申请公布号
SU1656168(A1)
申请公布日期
1991.06.15
申请号
SU19894651572
申请日期
1989.02.17
申请人
N-PROIZV OB "ZHILKOMMUNTEKHNIKA"
发明人
BOLOTIN MIKHAIL I,SU
分类号
F04D29/00;F04D13/10
主分类号
F04D29/00
代理机构
代理人
主权项
地址
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