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经营范围
发明名称
DRILLING BIT
摘要
申请公布号
SU817244(A1)
申请公布日期
1981.03.30
申请号
SU19792766450
申请日期
1979.05.17
申请人
AVDONIN YURIJ F,SU;MINEROV GENNADIJ M,SU;CHUVILIN ANATOLIJ M,SU
发明人
AVDONIN YURIJ F,SU;MINEROV GENNADIJ M,SU;CHUVILIN ANATOLIJ M,SU
分类号
(IPC1-7):E21C13/06
主分类号
(IPC1-7):E21C13/06
代理机构
代理人
主权项
地址
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