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发明名称
DEVICE FOR LIFTING AND LOWERING EQUIPMENT IN BOREHOLES
摘要
申请公布号
SU1693227(A1)
申请公布日期
1991.11.23
申请号
SU19894758530
申请日期
1989.11.13
申请人
AZERB NI PK I NEFTYANOGO MASHINOSTROENIYA
发明人
ALI-ZADE VAGIF A,SU;ZEJNALOV ELDAR T,SU;NOVOZHENIN PAVEL I,SU
分类号
E21B19/00;E21B19/24
主分类号
E21B19/00
代理机构
代理人
主权项
地址
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