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EMERGENCY LOCK FOR A FIRE PROTECTION DOOR AND RELEASE FOR A SMOKE FLAP
EMERGENCY LOCK FOR A FIRE PROTECTION DOOR AND RELEASE FOR A SMOKE FLAP
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机译:防火门的紧急锁和烟挡的释放
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摘要
The present invention relates to an emergency lock for a fire protection doorand a smoke flap releasehaving a temperature-active means for bolt actuation.
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