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EP0166437A2
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Boiler, particularly condensing boiler and method of manufacturing same
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EP0168637A2
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Gas-fired heater, especially a condensing heater, with a spirally formed smoke duct, method for making such a heater and heater made by such a method
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DE3423628A1
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Heating boiler with a combustion chamber and a burner arranged therein
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DE3422088A1
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Gas heating furnace with a spiral flue
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DE3416841A1
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Method for the production of a heating boiler with a double-walled, spiral plate as a part for carrying a heat transfer medium
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DE3416840A1
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Method for the production of a heating boiler with a double-walled, meander-shaped plate as a part for carrying a heat transfer medium
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EP0123994A1
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Condensing boiler with a zig-zag heat exchanger part
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EP0123995A1
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Condensing boiler with a spirally coiled heat exchanger part
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DE3411863A1
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Method and apparatus for the production of a meander-shaped heating coil for heating boilers, heat exchangers or the like
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DE3402925A1
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Condensate gas heating boiler with a heat exchanger arranged in the boiler block for industrial water heating
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DE3402086A1
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Spiral ring gas heating boiler with improved front covering
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DE3402088A1
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Gas heating boiler with improved front covering
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DE3401387A1
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Gas burner with a gas valve which is controllable in dependence on consumption
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DE3339927A1
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Process for the production of a gas burner and gas burner thus produced
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DE3333730A1
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Heating boiler with heating register of serpentine form
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DE3331054A1
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Spiral ring heating boiler
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EP0130230A1
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Method of insulating a boiler block, and insulated boiler block
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DE3315258A1
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Spiral ring heating boiler
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DE2743358A1
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Hollow door or window frame mebers - have glass pane securing fittings and sloping condensate guide surfaces
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DE2704808A1
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Double glazed window with frame formed of plastics profiles - has glazing retention bars which slide and form lock in frame channels
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