Audio-receivers and video-receivers; Camcorders; Computer cursor control devices, namely, light pens; Computer game software; Computer monitors; Computer operating programs, recorded; Computer peripheral devices; Condensers; Downloadable computer game programs; Electronic apparatus for the remote control of industrial operations; Electronic educational apparatus, namely, communication blocks that manipulate and convey information electronically based on their arrangement and are used for cognitive development in disciplines such as counting, spelling or quantitative reasoning; Microscope condensers; Optical lanterns; Optical lenses; Photographic filters; Portable media players; Printed circuit boards; Projection screens; Remote control telemetering machines and apparatus; Transmitters of electronic signals; Transparency projection apparatus; Video screens