Refractory products

Scientific and electrical apparatus and instruments (including wireless), photographic, cinematographic, optical weighing, measuring signalling, checking (supervision), life-saving, teaching apparatus and instruments; apparatus for receiving, controlling recording, transmission and/or reproduction of audio and/or video signals; including radio receivers, magnetic audio tape recorders and/or reproducers, electrical phonographs, compact disc audio reproducers, radio receiving tuners, amplifiers for audio signals, loud-speakers, control apparatus for audio signals, converters for analog/digital signals, electric or electronic timing apparatus, television recievers, magnetic video tape recorders and/or reproducers, video disc reproducers, video camera apparatus, monitor apparatus for television signals; coin or counter-freed apparatus; cash registers; calculating machines and data processing equipment.