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发明名称
DRILLING BIT STRUCTURE
摘要
申请公布号
SU1721208(A1)
申请公布日期
1992.03.23
申请号
SU19904776609
申请日期
1990.01.03
申请人
SP K BYURO PO DOLOTAM PROIZVODSTVENNOGO OBEDINENIYA "KUJBYSHEVBURMASH"
发明人
TORGASHOV ALEKSANDR V,SU;STEKLYANOV BORIS L,SU;GLADKIKH VIKTOR N,SU;SOKOLOV YURIJ N,SU;SUSLIKOV ALEKSANDR V,SU
分类号
E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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