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发明名称
CUTTER DRILL BIT
摘要
申请公布号
SU926221(A1)
申请公布日期
1982.05.07
申请号
SU19802890956
申请日期
1980.03.06
申请人
UFIMSKIJ NEFTYANOJ INSTITUT
发明人
ZAGORSKIJ VALERIJ K,SU;IVANOV VIKTOR P,SU;MITYUREV EVGENIJ A,SU
分类号
E21B10/22;(IPC1-7):E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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