9 weighing apparatus; namely, precision scales; apparatus for processing product pricing, product weighing, and product inventory data; namely, printing scales, data processing scales, calculating scales, encoders, computers and peripherals thereof; cash registers; telecommunication apparatus; namely, teleprocessing terminals; computer programs for product pricing, product surveyance, product inventory, and advertising purposes; electric wires, cables, conductors, couplings; switches, switchboards, switchboxes; electronic scanners; electronic reading equipment; namely, optical readers, magnetic character readers; keyboards; data concentrators, data captor units; checkout gates and checkout units for article surveyance in retail stores, supermarkets and the like premises; electronic display units; and parts thereof; dot matrix printers and laser printers