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经营范围
发明名称
DRILLING RIG
摘要
申请公布号
SU998719(A1)
申请公布日期
1983.02.23
申请号
SU19813362157
申请日期
1981.09.02
申请人
VNI PK I GORNORUDNOGO MASHINOSTROENIYA
发明人
BOVDUJ BORIS G,SU;GRITSAEV NIKOLAJ T,SU;KOBOZEV VLADIMIR N,SU;ZERNYUKOV SERGEJ E,SU
分类号
E21B3/00;E21B4/00;(IPC1-7):E21B4/00;E21C1/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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