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发明名称
VENTILATION SHAFT
摘要
申请公布号
SU1322027(A1)
申请公布日期
1987.07.07
申请号
SU19864019208
申请日期
1986.02.04
申请人
G PI "LENINGRADSKIJ PROMSTROJPROEKT"
发明人
MAMKIN PETR P,SU;SEMENOV OLEG A,SU;VOLKOVICH MIKHAIL F,SU
分类号
F24F7/02
主分类号
F24F7/02
代理机构
代理人
主权项
地址
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