发明名称 Ventilator for farm animal building has an inlet housing with a pivoting flap and weight counterbalance
摘要 <p>A farm animal building has a ventilation aperture with an internal flap-operated closure. The flap closure is a sliding or pivoting unit balanced by a cable-weight.</p>
申请公布号 DE10345055(A1) 申请公布日期 2005.05.19
申请号 DE2003145055 申请日期 2003.09.26
申请人 HAGMANN, ERNST 发明人 HAGMANN, ERNST;HAGMANN, SIMON DOMINIK
分类号 A01K1/00;F24F11/00;(IPC1-7):F24F7/00;F24F13/14 主分类号 A01K1/00
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