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发明名称
DRILL FOR DIGGING HOLES OF LARGE DIAMETER
摘要
申请公布号
SU600282(A1)
申请公布日期
1978.03.30
申请号
SU19762423155
申请日期
1976.11.19
申请人
MO GEOLOGORAZVEDOCHNYJ I IM SERGO ORDZHONIKIDZE
发明人
BRYLOV SERGEJ A,SU;GRABCHAK LEONID G,SU;POPOV ALEKSANDR N,SU;SYSOEV GENNADIJ P,SU;KUZOVLEV BORIS N,SU
分类号
(IPC1-7):E21B9/02
主分类号
(IPC1-7):E21B9/02
代理机构
代理人
主权项
地址
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