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CH654623A5
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Fire protection flap
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CH653085A5
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Hinge
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CH651648A5
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Grilled air outlet device for ventilating or heating a room.
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CH654055A5
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Threaded bolts for rigid spacing on a construction surface.
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ATA460980A
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Retainer for window shutters
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CH643378A5
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Thermally releasable device for locking a power-loaded, movable actuating member, in particular for a fire-protection flap
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CH642138A5
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Retaining device for window shutters
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FR2451550A1
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Variable volume air conditioning system - has outlets in pairs with constant flow through one of each pair
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CH633851A5
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Device for the retention of outside window shutters
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DE2802873A1
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CLOSING FLAP FOR GAS DUCTS
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CH622087A5
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Closing device for gas ducts, in particular ventilation ducts
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CH604106A5
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Fire protection shutter for duct
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DE2353909A1
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Pressure reducing valve of ventilation supply air outlet - has long throttling passage to reduce pressure without noise
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