[ Computers; ] keyboards for personal computers [ ; electronic machines and apparatus, namely, industrial betatrons not for medical use, echo sounders, ultrasonic sensors, electrostatic copying machines, electronic desk calculators, hard disk drives, word processors, photo-sensitive tubes, namely, phototubes, semi-conductors, integrated circuits, and replacement parts therefor; telecommunication devices and apparatus, namely, intercoms, mobile phones, automatic telegraph apparatus, phototeleg...