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Magnetic data carriers, data processing equipment and computers, data processing programs recorded on data carriers, all of the afore- mentioned goods for control, automation and checking (supervision) in the field of air conditioning, ventilation, fire protection, filtering and soundproofing technology; scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments, except spectacles, sunglasses, spectacle frames, lenses, hinges and cases for spectacles and sunglasses, and parts and fittings therefor; apparatus and instruments for the conducting, switching, conversion, storage, regulating and control of electricity, in particular for control, automation and checking (supervision) in the field of air conditioning, ventilation, fire protection, filtering and soundproofing technology; apparatus for recording, transmission or reproduction of sound or images. Ventilation and air-conditioning installations and parts therefor, in particular for distributing and filtering air, regulating air mixtures, soundproofing, fire protection and refrigerating covers; equipment for ventilation and air conditioning. Building construction, in particular engineering and architecture construction in the field of air-conditioning technology.