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HU201432B
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Filter tunable to several harmonics
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HUT52732A
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Water boiler of inhomogeneous temperature-distribution
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HUT52145A
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Process for complex utilization of oil shale
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HUT52226A
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Double-flue vortex-ring gas boiler
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HUT52227A
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Pulsating fluidization firing adapter
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HUT53210A
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Single-shaft coal-fired boiler provided with smoking arrester
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HUT43464A
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Covering device decreasing heating costs for foil tents
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HUT43367A
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Fastening device for making additional glass surface and safety cover
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HUT40500A
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Air-state homogenizer
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HUT38995A
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Family of lamp fittings supplied with light source of high light utilizition for flat illuminating and communal purpose
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HUT34605A
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Dissectable aluminium radiator particularly for heating living spaces
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HUT35364A
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Automatic heat control device for power economic operating heting equipments with solid fuel
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