Loudspeakers; Radios; Semi-conductors; Spectacles; Telescopes; Alarm bells, electric; Apparatus for transmission of communication; Audio-receivers and video-receivers; Audio amplifiers; Computer peripheral devices; Covers for tablet computers; Electric batteries; Electric installations for the remote control of industrial operations; Eyeglasses; Light emitting diodes (LEDs); Magnetic identifying cards; Measuring cups; Measuring rulers; Measuring spoons; Portable detection and identification i...