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发明名称
ROD SCREW JOINT
摘要
申请公布号
SU1102883(A1)
申请公布日期
1984.07.15
申请号
SU19823378449
申请日期
1982.01.08
申请人
PERMSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
BAKHVALOV VLADIMIR A,SU
分类号
E21B17/042;E21B17/02;(IPC1-7):E21B17/02
主分类号
E21B17/042
代理机构
代理人
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