[ Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, circuit boards, interface circuit cards, microcircuits, integrated circuits, integrated circuit sockets, electric switches, electric connectors, rectifiers, attenuators, voltage regulators, electric loop controllers, alternating and direct current voltage converters, lightning arrestors; apparatus for recording, transmission or reproduction of sound or images; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, ] [ calculating machines, ] [ data processing equipment and computers; ] electronic components, namely, [ surface acoustic wave filters, surface acoustic wave resonators, thermistors, varistors, piezo electric sensors, piezo electric actuators, surge voltage arrestors, filters for radio interference suppression, capacitors, ] chokes [, electrical inductors in the nature of inductive ferrites and ferrite cores; and structural parts of the above-mentioned appliances, devices and instruments ]