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发明名称
VALVE LANDING NIPPLE
摘要
申请公布号
SU1716100(A1)
申请公布日期
1992.02.28
申请号
SU19894751663
申请日期
1989.10.19
申请人
OSOBOE K BYURO PO PROEKTIROVANIYU NEFTEGAZODOBYVAYUSHCHIKH MASHIN OBORU "NEFTEMASH"
发明人
RZAEV ALI I,SU;BEKIROV NAMIK I,SU;GADASHOV MAMED-EMIN A,SU
分类号
E21B34/06
主分类号
E21B34/06
代理机构
代理人
主权项
地址
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