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经营范围
发明名称
BOREHOLE-DRILLING APPARATUS
摘要
申请公布号
SU791917(A1)
申请公布日期
1980.12.30
申请号
SU19782648616
申请日期
1978.07.26
申请人
VNII BUROVOJ TEKHNIKI
发明人
AKOPOV EDUARD A,SU;VASILEV YURIJ S,SU;DATSENKO VLADIMIR A,SU;KAJDANOV EDUARD P,SU
分类号
E21B21/00;(IPC1-7):E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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