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经营范围
发明名称
DEVICE FOR DRILLING BLAST HOLES
摘要
申请公布号
SU781333(A1)
申请公布日期
1980.11.23
申请号
SU19792716835
申请日期
1979.01.29
申请人
VLASOV YURIJ N,SU;PROKHOROV BORIS M,SU;KHARITOSHIN PETR P,SU;GONCHAROV VIKTOR V,SU
发明人
VLASOV YURIJ N,SU;PROKHOROV BORIS M,SU;KHARITOSHIN PETR P,SU;GONCHAROV VIKTOR V,SU
分类号
E21B19/084;B25D17/12;E21B1/00;(IPC1-7):E21C3/24;E21C5/00
主分类号
E21B19/084
代理机构
代理人
主权项
地址
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