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CH602157A5
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Removable filter for filtration battery or air-conditioning plant
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US3980458A
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Apparatus for purifying a gaseous stream
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CH584870A5
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Central heating system heat exchanger assembly - has additional sections in outlet duct to prevent circulation water from freezing
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CH583564A5
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Deodorising process for malodorous gases - including UV irradiation with acid alkaline washes
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GB1425546A
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Ventilators
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CH557462A
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Automatic disposal of household and industrial rubbish - has electrically driven grinder with safety circuit cut-out
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ES389933A1
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Method of and apparatus for cleaning gases
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IL35775D0
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Gas filter
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GB1287676A
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Ventilation trunk and method of making the same
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DE1910139A1
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Mechanical organ for the union of two thin plates in a mutually perpendicular position
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CH508858A
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Air circulator, to produce a stream of hot air for drying laundry or other objects
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DE1679593A1
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Ventilation system with a removable filter placed in a duct
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CH480547A
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Connecting member to assemble two thin plates in a perpendicular position
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