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WO2012013992A1
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Method and system for tunnel ventilation in normal conditions and in conditions of fire
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EP2143958A1
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Ventilator integrated into a tube
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EP1961969A2
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Radial fan wheel
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EP1961968A1
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Radial fan wheel and radial fan incorporating the same with locking protection
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EP1961967A1
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Radial fan wheel and radial fan incorporating the same
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EP1961966A1
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Radial fan impeller
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EP1112759A1
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Process for the ventilation of road tunnel
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YU89188A
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Membranic valve for great amount of compressed air releasing in short time periode, usable for various air pressures
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YU37887A
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Rotor of centrifugal fan for transporting particles, with possibility of getting higher pressure at same wideness, diameter and turning speed
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YU32787A
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Additional wings for ventilator's rotor, which are used as sealing element of a spindle
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YU28587A
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Device for hanging, stretching and shaking off at filter with pneumatic sacks shaking off
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YU69384A
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Framework for bearings of centrifugal ventilator working spindle
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YU43884A
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Wreath of cyclone blades with axial entry
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