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经营范围
发明名称
DRILLING IMPLEMENT
摘要
申请公布号
SU926225(A1)
申请公布日期
1982.05.07
申请号
SU19802965264
申请日期
1980.07.21
申请人
VNII ZOLOTA REDKIKH METALLOV
发明人
BRAGIN PAVEL A,SU;KONOVALCHUK ADAM S,SU;SEMILETOV ALEKSANDR N,SU
分类号
E21B17/00;(IPC1-7):E21B17/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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