Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Apparatus for testing gas, liquids and solids; Audio speakers; Batteries, electric; Cable and wiring plates in the nature of protective sheaths for electrical cable and wiring; Calculators and calculating machines; Cameras; Cases for music, audio and related electronic equipment, namely, cases for audio tuners, audio receivers, amplifiers, tape players, compact disc player...