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发明名称
DEVICE FOR TREATING BOTTOM HOLE ZONE
摘要
申请公布号
SU1694874(A1)
申请公布日期
1991.11.30
申请号
SU19894721989
申请日期
1989.07.20
申请人
PK BYURO ELEKTROGIDRAVLIKI AN
发明人
ZASLAVSKIJ SAMUIL I,SU;KURASHKO YURIJ I,SU;RUDENKO ALEKSANDR N,SU
分类号
E21B28/00;E21B37/00;E21B43/25
主分类号
E21B28/00
代理机构
代理人
主权项
地址
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