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Device for fixing and dismantling components in and from circular ventilation duct
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Damper arrangement
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A damper device
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Damper for air flow regulation of ventilator
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Damper for air flow regulation of ventilator
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Device for a connection between two in a ventilation system including pipes and procedures and tools for preparing such a collection
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Register arrangement comprising two register elements arranged rotatably in the casing
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Damper device
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A device for supplying air to a room
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Procedure and arrangement for filtering an air stream
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Method and device for defrosting of heat exchangers
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Over apparatus foer att avfrosta en i en ventilationsanlaeggning ingaoende vaermevaexlare
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Arrangement to counteract or prevent spreading of fire or smoke
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Arrangement for a filter which facilitates cleaning by back-blowing
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Method and layout for preventing or counteracting propagation of fire, smoke, or other fire gases
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Arrangement in axial fans, compressors, turbines, pumps or the like
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Cylindrical filter esp. for air is cleaned by centrifuging - combined with flow reversal and opt. spraying of cleaning liquid
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FI773231A
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Anordning foer filtrering av ett medium
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