Transmitter of electronic signals; electrodes; electronic controls, sensors, holders and housings for use in the measurement of concentration, the potentiometric measurement, the conductometry, the amperometric measurement, [the pH measurement, the redox measurement,] the measurement of ions, [the ion selective measurement, the turbidity measurement, the oxygen measurement, the ozone measurement, the carbon dioxide measurement, the measurement of dissolved gases,] the conductivity measurement...

speaker parts, namely, loudspeakers, subassemblies, lamps, cabinets, transducers