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发明名称
FITTINGS FOR GUSHING WELLS
摘要
申请公布号
SU1557312(A1)
申请公布日期
1990.04.15
申请号
SU19874281626
申请日期
1987.06.22
申请人
OSOBOE K BYURO PO PROEKTIROVANIYU NEFTEGAZODOBYVAYUSHCHIKH MASHIN OBORUDOVANIYA
发明人
AKHMEDOV KHIKMET YU,SU
分类号
E21B33/03
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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