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经营范围
发明名称
DIAMOND BIT
摘要
申请公布号
SU597807(A1)
申请公布日期
1978.03.15
申请号
SU19762352475
申请日期
1976.04.12
申请人
OTDEL EX ISSLEDOVANIJ TSNI GEOLOGORAZVEDOCHNOGO I TSVETNYKH BLAGORODNYKH METALLOV
发明人
BUDYUKOV YURIJ E,SU;SUMANEEV NIKOLAJ N,SU
分类号
(IPC1-7):E21B9/36
主分类号
(IPC1-7):E21B9/36
代理机构
代理人
主权项
地址
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