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发明名称
EXPANDER
摘要
申请公布号
SU962575(A1)
申请公布日期
1982.09.30
申请号
SU19802990347
申请日期
1980.10.08
申请人
N-PROIZV OB PO TERMICHESKIM METODAM DOBYCHI NEFTI
发明人
ZAKKHEEV ALEKSANDR N,SU;KORSHUNOV VALERIJ N,SU;KUVSHINOV VIKTOR A,SU;MASHKOV VIKTOR A,SU;SHCHAPIN VYACHESLAV M,SU
分类号
E21B7/28;E21B10/32;(IPC1-7):E21B7/28
主分类号
E21B7/28
代理机构
代理人
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