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经营范围
发明名称
DRILLING TOOL
摘要
申请公布号
SU794216(A1)
申请公布日期
1981.01.07
申请号
SU19782703036
申请日期
1978.12.28
申请人
DOMAKHOVSKIJ ALEKSANDR V,SU;SAFRONOV VIKTOR G,SU;VASENEVA LYUDMILA B,SU
发明人
DOMAKHOVSKIJ ALEKSANDR V,SU;SAFRONOV VIKTOR G,SU;VASENEVA LYUDMILA B,SU
分类号
E21B4/14;E21B1/00;(IPC1-7):E21C3/00
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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