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经营范围
发明名称
ARRANGEMENT FOR ELIMINATING STICKING OF DRILL PIPE STRING
摘要
申请公布号
SU754041(A1)
申请公布日期
1980.08.07
申请号
SU19772457465
申请日期
1977.03.01
申请人
VNII PO KREPLENIYU SKVAZHIN BUROVYM RASTVORAM
发明人
PANOV VLADISLAV N,SU;KOSHELEV NIKOLAJ N,SU;KONRAD FRAIM F,SU;SAMOTOJ ANATOLIJ K,SU;SERENKO IGOR A,SU
分类号
E21B31/107;E21B23/00;(IPC1-7):E21B23/00
主分类号
E21B31/107
代理机构
代理人
主权项
地址
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