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经营范围
发明名称
DRILLING TOOL
摘要
申请公布号
SU673731(A1)
申请公布日期
1979.07.15
申请号
SU19772473566
申请日期
1977.04.04
申请人
PERMSKIJ G PK EXI GORNOGO MASH "PERMGIPROGORMASH"
发明人
BELONOGOV PAVEL V,SU;SIRAK GRIGORIJ ,SU
分类号
E21B17/00;(IPC1-7):E21C15/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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