9 Geiger counters, optical character readers, recorded computer operating programs, notebook computers, laptop computers, mouse pads, microprocessors, bar code readers, video game cartridges, lasers not for medical purposes, cyclotrons, word processors, magnetic encoders, electronic notice boards, electronic agendas, electron microscopes, central processing units, seismic exploration machines and apparatus, ultrasonic flaw detectors, ultrasonic sensors, computers, computer memories, computer hardware monitors, disk drives for computers, wrist rests for use with computers, magnetic tape drives for computers, printers for use with computers, computer keyboards, closed circuit boards, plotters, pocket calculators, electronic pocket translators, personal digital assistants, phototubes, cathode-ray tubes, electric discharge tubes other than for lighting, rectifier tubes, vacuum tubes, computer mouse, magnetic object detectors, demagnetizers for magnetic tapes, electronic automatic door opener and closer, electronic ultrasonic insect killing devices, ultrasonic sound detectors