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经营范围
发明名称
METHOD OF SINKING MINE SHAFTS
摘要
申请公布号
SU1446316(A1)
申请公布日期
1988.12.23
申请号
SU19843732721
申请日期
1984.03.22
申请人
TSNI PK I PROKHODCHESKIKH MAS
发明人
BRAKKER ILYA I,SU;SHEVALDIN ALEKSANDR G,SU
分类号
E21D1/06;(IPC1-7):E21D1/06
主分类号
E21D1/06
代理机构
代理人
主权项
地址
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