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经营范围
发明名称
VENTILATION VALVE DRIVE
摘要
申请公布号
SU609029(A1)
申请公布日期
1978.05.30
申请号
SU19721759392
申请日期
1972.03.17
申请人
USAKOV LEV G,SU
发明人
USAKOV LEV G,SU
分类号
F24F13/12;F16K29/00;(IPC1-7):F24F13/12
主分类号
F24F13/12
代理机构
代理人
主权项
地址
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