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发明名称
WELLHEAD SEALING ARRANGEMENT
摘要
申请公布号
SU1216326(A1)
申请公布日期
1986.03.07
申请号
SU19843736887
申请日期
1984.04.29
申请人
SP K BYURO V PROMYSHLENNOGO OBEDINENIYA "SOYUZGEOTEKHNIKA"
发明人
KOGAN DAVID I,SU;VESELOV VYACHESLAV F,SU;GENIS VLADIMIR L,SU
分类号
E21B33/03;(IPC1-7):E21B33/03
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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