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发明名称
DEVICE FOR DRILLING WELL
摘要
申请公布号
SU1273488(A1)
申请公布日期
1986.11.30
申请号
SU19843766916
申请日期
1984.07.05
申请人
KUZBASSKIJ POLT I "GIPROSHAKHT"
发明人
SAFOKHIN MIKHAIL S,SU;NACHEV KONSTANTIN V,SU;BOGOMOLOV IGOR D,SU
分类号
E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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