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发明名称
DRILLING RIG FOR ROTARY DRILLING WITH BACK-FLUSHING
摘要
申请公布号
SU1469093(A1)
申请公布日期
1989.03.30
申请号
SU19874280449
申请日期
1987.07.07
申请人
TURKMENSK NI GEOLOGORASVEDOC
发明人
KERIMOV VAID A,SU;ISMAILOV ROBERT A,SU;OLISHIVETS BORIS N,SU
分类号
E21B21/00;E21B3/00;E21B3/02;E21B21/02
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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