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发明名称
VENTILATION SYSTEM
摘要
申请公布号
GB8712315(D0)
申请公布日期
1987.07.01
申请号
GB19870012315
申请日期
1987.05.26
申请人
HYDOR CO LTD
发明人
分类号
主分类号
代理机构
代理人
主权项
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