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经营范围
发明名称
ROCK DRILL ROTOR
摘要
申请公布号
SU950907(A1)
申请公布日期
1982.08.15
申请号
SU19813232684
申请日期
1981.01.06
申请人
INST GORNOGO DELA SO AN SSSR
发明人
MUKHIN ZHORES G,SU;ZAKABLUKOVSKIJ NIKODIM G,SU;BOBROV OLEG I,SU
分类号
E21B3/02;B25D17/28;E21B17/03;(IPC1-7):E21C3/34
主分类号
E21B3/02
代理机构
代理人
主权项
地址
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