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经营范围
发明名称
DRILLING RIG SWIVEL
摘要
申请公布号
SU1157201(A1)
申请公布日期
1985.05.23
申请号
SU19843693551
申请日期
1984.01.20
申请人
NI PK I PO DOBYCHE POLEZNYKH ISKOPAEMYKH OTKRYTYM SPOSOBOM
发明人
BRYUKHOV BORIS F,SU;TELESHOV ADOLF S,SU;NURGALIN SHAJDULLA A,SU
分类号
E21B3/02;E21B17/03;(IPC1-7):E21B3/02
主分类号
E21B3/02
代理机构
代理人
主权项
地址
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