Computer memory devices; [ Diodes; Dog whistles; Electronic agendas; Eyeglasses; Instruments for measuring length; Integrated circuits; ] Power supplies; [ Renewable battery system to provide backup power; Spectacles; ] Time clocks [ ; Warning bells; Zoom microscopes; Distance measuring apparatus; Gravity measuring instruments; Pressure measuring apparatus; Tool measuring instruments ]

3D spectacles; Acoustic sound alarms; Batteries, electric, for vehicles; Cabinets for loudspeakers; Chargers for electric batteries; Computer peripheral devices; Global positioning system (GPS); Headphones; Photographic cameras; Radios; Smartphones; Sound transmitting apparatus; Cell phone cases; Cell phone covers; Electric cables; Electric light dimmers; Electric meters; Electric switches; Electric wire and cable; Electronic devices used to locate lost articles employing the global positioni...