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发明名称
DEVICE FOR SEPARATING FORMATIONS WHEN CASING A WELL
摘要
申请公布号
SU1618866(A2)
申请公布日期
1991.01.07
申请号
SU19884424580
申请日期
1988.05.13
申请人
VDZEDZOYIUZNUYI NAUSNNO-IDZDZLEDOVATELDZKIYI INDZTITUT VUROVOYI TEKNNIKI
发明人
VANIFATEV VLADIMIR I,SU;TDZURIN YIURIYI Z,SU;TERENTEV DZERGEYI V,SU;DUDALADOV ANATOLIYI K,SU
分类号
E21B33/13
主分类号
E21B33/13
代理机构
代理人
主权项
地址
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