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发明名称
Всасывающая коробка породоподъемного эрлифта для бурения шахт
摘要
申请公布号
SU83767(A1)
申请公布日期
1949.11.30
申请号
SU19490390858
申请日期
1949.01.29
申请人
MANKOVSKIJ G.I.
发明人
MANKOVSKIJ G.I.
分类号
E21D1/06
主分类号
E21D1/06
代理机构
代理人
主权项
地址
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