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发明名称
DEVICE FOR SEALING VENTILATION CLEARINGS AND DOORS
摘要
申请公布号
SU705121(A1)
申请公布日期
1979.12.25
申请号
SU19782631517
申请日期
1978.06.16
申请人
DO G P K EXI KOMPLEKSNOJ MEKH SHAKHT
发明人
SENNIKOV VITALIJ F,SU;IVANOV VASILIJ YA,SU
分类号
E21F1/14;(IPC1-7):E21F1/14
主分类号
E21F1/14
代理机构
代理人
主权项
地址
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