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经营范围
发明名称
EJECTOR DRILLING TOOL
摘要
申请公布号
SU1028833(A1)
申请公布日期
1983.07.15
申请号
SU19813336773
申请日期
1981.09.07
申请人
SP K BYURO V PROMYSHLENNOGO OBEDINENIYA "SOYUZGEOTEKHNIKA"
发明人
KOGAN DAVID I,SU;KVENTSEL ANATOLIJ L,SU;GOLIKOV VIKTOR YA,SU;BUTSAEV ZHAN D,SU
分类号
E21B21/08;(IPC1-7):E21B21/08
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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