9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; sound and image registering, recording, transmission or reproduction apparatus; software; magnetic recording media, sound recording disks; compact disks, DVDs and other digital recording media; downloadable publications; interactive electronic publications; apparatus for scientific and laboratory research; educational apparatus and simulators; downloadable educational media; teaching apparatus; digital books downloadable from the Internet; electronic books; books on audio media