[ CHARGING DEVICES FOR ACCUMULATORS; LIGHT AND LASER WELDERS, NOT FOR MEDICINAL PURPOSES; ELECTRICAL WELDING AND CUTTING DEVICES, NAMELY, ARC WELDERS; WELDING ELECTRODES, AND CURRENT AND VOLTAGE CONVERTORS, ALL FOR WELDING DEVICES; INVERTER AND PLASMA WELDING CURRENT SOURCES; FREQUENCY CONVERTERS; ELECTRICAL TRANSFORMERS; SOLAR POWER EQUIPMENT, NAMELY, PHOTOVOLTAIC CELLS AND PANELS; ] CONTROL SYSTEMS FOR OPERATING WELDING DEVICES AND ROBOTS COMPRISED PRIMARILY OF COMPUTER SOFTWARE AND HARDWAR...