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经营范围
发明名称
METHOD OF SINKING MINE SHAFTS
摘要
申请公布号
SU1273569(A1)
申请公布日期
1986.11.30
申请号
SU19843776813
申请日期
1984.08.02
申请人
PROIZV OB "YAKUTUGOL";INST GORNOGO DELA SEVERA YAKU
发明人
VASILEV PETR N,SU;UMANTSEV RADION F,SU;KIRZHNER FELIKS M,SU
分类号
E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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