Scientific, [ nautical, ] surveying, photographic, cinematographic, optical, weighing, measuring, signalling, supervising, life-saving and teaching apparatus and instruments * for weed control *, namely, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity * for weed control * ; apparatus for recording, transmission or reproduction of sound or images * for weed control * ; blank magnetic data carriers and recording discs; comp...