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经营范围
发明名称
DRILLING STRING
摘要
申请公布号
SU1418465(A1)
申请公布日期
1988.08.23
申请号
SU19864036402
申请日期
1986.03.10
申请人
GNI PI NEFTYANOJ PROMY "UKRGIPRONIINEFT"
发明人
AL-FAYAD SALIM A,SU
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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