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发明名称
APPARATUS FOR PREVENTING STICKING OF DRILLING TOOL
摘要
申请公布号
SU721517(A1)
申请公布日期
1980.03.15
申请号
SU19772464250
申请日期
1977.03.21
申请人
GROZNENSKOE N-PROIZV OB "PROMAVTOMATIKA"
发明人
KUKHTINOV ALEKSEJ S,SU;TARANETS VALERIJ G,SU;ABDULAEV ALEKSANDR A,SU
分类号
E21B44/00;E21B23/00;(IPC1-7):E21B23/00
主分类号
E21B44/00
代理机构
代理人
主权项
地址
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