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发明名称
AIR MINE DOOR FOR REGULATING AIR FLOW
摘要
申请公布号
SU1578362(A1)
申请公布日期
1990.07.15
申请号
SU19874298416
申请日期
1987.08.24
申请人
DO NI UGOLNYJ INSTITUT
发明人
EGORKIN NIKOLAJ P,SU;VERBA VASILIJ S,SU;PATRUSHEV MIKHAIL A,SU;US VLADIMIR N,SU
分类号
E21F1/10
主分类号
E21F1/10
代理机构
代理人
主权项
地址
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