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发明名称
DRILLING ROLLER BIT
摘要
申请公布号
SU1574818(A1)
申请公布日期
1990.06.30
申请号
SU19884472476
申请日期
1988.05.26
申请人
MO GEOLOGORAZVEDOCHNYJ I IM.SERGO ORDZHONIKIDZE
发明人
KARPIKOV ALEKSEJ P,SU;SHEKHURDIN VALERYAN K,SU;SMAGIN PAVEL F,SU;CHUNOSOV VALERIJ V,SU;BELYAEV PAVEL A,SU
分类号
E21D3/00
主分类号
E21D3/00
代理机构
代理人
主权项
地址
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