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发明名称
HOLE-BOTTOM INDEXING APPARATUS
摘要
申请公布号
SU1011859(A1)
申请公布日期
1983.04.15
申请号
SU19813265251
申请日期
1981.06.01
申请人
AZERB GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
NAZIROV SEJFADDIN A,SU;ASTVATSATUROV ALEKSANDR G,SU
分类号
E21B47/02;E21B7/04;(IPC1-7):E21B47/02
主分类号
E21B47/02
代理机构
代理人
主权项
地址
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