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发明名称
DRILLING CROWN BIT
摘要
申请公布号
SU1357534(A1)
申请公布日期
1987.12.07
申请号
SU19853897803
申请日期
1985.05.20
申请人
SP K BYURO V PROMYSHLENNOGO OBEDINENIYA "SOYUZGEOTEKHNIKA"
发明人
SAVOSTYANOV VLADIMIR G,SU;KIRSANOV VALERIJ A,SU;BUGAEV ALEKSANDR A,SU;BOGDANOV ROBERT K,SU;LIVSHITS VALERIJ N,SU
分类号
E21B10/48;B28D1/04
主分类号
E21B10/48
代理机构
代理人
主权项
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