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Improvements relating to ventilators
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Adjustable ventilator with fire-damper control
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Improvements relating to fire fighting
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Improvements in ventilators
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AU8255987A
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Electric motor driven linear actuator with electro-magnetic release
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Emergency pneumatic actuation of ventilation flaps: fuse mounting releaseable independently of fuse rupture
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Sealing louvred dampers in ventilators
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Ventilators
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