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发明名称
APPARATUS FOR FILLING DRILL PIPE STRING WITH LIQUID
摘要
申请公布号
SU1298368(A1)
申请公布日期
1987.03.23
申请号
SU19853962881
申请日期
1985.10.04
申请人
VOLGOGRADSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
BABOSHKIN NIKOLAJ N,SU;SUKHONOSOV GEORGIJ D,SU
分类号
E21B49/00
主分类号
E21B49/00
代理机构
代理人
主权项
地址
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