37 Services for the installation, repair and maintenance of electronic and/or electric data transmission networks, network communication nodes, electric and electronic components, electric and electronic apparatus for measuring, controlling, regulating, electronic data processing programs, data transmission cables, electronic devices for data distribution and transmission, for checking and controlling, calculators, data processing equipment, electric and electronic checking and control apparatus, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, calculating machines, multiplexing devices, electrical network cables, electric network cables connected to calculators, electric coils, electrical splice boxes, electrical connection boxes, electrical junction boxes, switches, electric conductors, connectors, connection boxes, jack panels, vehicle speed checking devices, electric converters, electric connectors, electric line connectors, electric relays, electric transformers, electric cable sheaths, measuring instruments, measurers, electrical control panels, connection panels, electrical distribution panels, vehicles, apparatus for locomotion by land, air or water