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经营范围
发明名称
DRILLING RIG
摘要
申请公布号
SU567809(A1)
申请公布日期
1977.08.05
申请号
SU19742002639
申请日期
1974.03.04
申请人
BUTORIN YURIJ M,SU;NECHAEV NIKOLAJ N,SU;CHUMAKOV GENNADIJ V,SU
发明人
BUTORIN YURIJ M,SU;NECHAEV NIKOLAJ N,SU;CHUMAKOV GENNADIJ V,SU
分类号
E21B3/00;(IPC1-7):E21C1/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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