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发明名称
APPARATUS FOR CLEANING BOTTOM-ADJOINING AREA OF BOREHOLE
摘要
申请公布号
SU941550(A1)
申请公布日期
1982.07.07
申请号
SU19792849602
申请日期
1979.12.05
申请人
VNI GEOLOGORAZVEDOCHNYJ NEFTYANOJ INSTITUT
发明人
OBMORYSHEV KONSTANTIN M,SU;MUKHA ANATOLIJ G,SU
分类号
E21B37/00;E21B43/25;(IPC1-7):E21B43/25
主分类号
E21B37/00
代理机构
代理人
主权项
地址
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