Scientific, nautical, surveying, electric, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatuses and instruments; apparatus for the recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatuses; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatuses; household appliances comprised in this class, such as radio and television sets, recorders, video tape-recorders, videocameras, projectors, retro-projector, high-fidelity stereo systems; amplifiers, loudspeakers, irons; parts and fittings included in this class for all the aforesaid products