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发明名称
VENTILATION PIPE FOR REMOVAL OF GASES AND DUST FROM STRIPPING
摘要
申请公布号
RU2006587(C1)
申请公布日期
1994.01.30
申请号
SU19894779112
申请日期
1989.11.28
申请人
POPOV YURIJ M
发明人
POPOV YURIJ M
分类号
E21F1/00;(IPC1-7):E21F1/00
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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