发明名称 Remotely-controlled garage door has pre-tensioned opening spring
摘要 <p>An upwards-hinging garage door is closed manually against the force of a counter-spring, and locked by a latch. The latch is esp. released by a remote-control unit, causing the door to open automatically.</p>
申请公布号 DE20302061(U1) 申请公布日期 2003.04.30
申请号 DE2003202061U 申请日期 2003.02.10
申请人 HOERMANN KG ANTRIEBSTECHNIK 发明人
分类号 E05F1/00;E05F15/20;(IPC1-7):E05F1/00 主分类号 E05F1/00
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