Accumulators; Accumulators, electric, for vehicles; Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Audio amplifiers; Audio speakers; Calibrating devices for calibrating atomic absorption spectrometers; Electrical controlling devices; Measuring instrumentation and apparatus, namely, digitizers; Microphones for communication devices; Nautical and photographic apparatus and instruments, namely, underwater housings for cameras, underwater enclosures for cameras and underwater enclosures for photographic lenses; Optical inspection apparatus; pH meters; Tablet computers; Tire pressure gauges; Weighing apparatus and instruments; Air quality measurement apparatus, namely, particle counters; Change-over switches; Coin counting or sorting machines; Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; Computer component testing and calibrating equipment; Currency counting machines; Digital telephone switching apparatus; Educational apparatus, namely, manipulative blocks used as teaching aids for the visualization of math concepts; Electrical annunciators; Electro-dynamic apparatus for the remote control of signals; 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; Industrial calibration sensors; Instruments and apparatus for controlling electric current, namely, electrical controllers for magnetic bearing control; Lap-counting devices, namely, counters for use during sporting activities; Money counting and sorting machines; Panel meters, namely, an electronic instrument that displays an input signal in either a digital or analog form; Rechargers for electric accumulators; Resistors for distributing or controlling electric current; Scientific apparatus, namely, sensing and signaling devices for measurement and quality control of materials processing by laser; Solar panels for production of electricity; Stills for scientific purposes; Technical measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas and liquids