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经营范围
发明名称
DRILLING TOOL
摘要
申请公布号
SU697681(A1)
申请公布日期
1979.11.15
申请号
SU19731959910
申请日期
1973.09.25
申请人
DN NII STROITELNOGO PROIZVODSTVA
发明人
LYSENKO YURIJ ,SU;OVSYANKIN VIKTOR M,SU;TRUBNIKOV YURIJ A,SU
分类号
E21B11/02;(IPC1-7):E21B11/02
主分类号
E21B11/02
代理机构
代理人
主权项
地址
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