ELECTRICAL APPARATUS, MACHINES, AND SUPPLIES, INCLUDING RECTIFIERS, TRANSFORMERS, INDUSTRION VOLTAGE REGULATORS, SWITCHBOARDS, RELAYS, SWITCHES, RESISTORS, CIRCUIT BREAKERS, STATIC CONDENSERS, REACTORS, FUSES, CONNECTORS; ELECTRIC BATTERIES INCLUDING DRY CELLS, WET CELLS, STORAGE BATTERIES; ELECTRICAL MATERIALS INCLUDING INSULATORS, ELECTRODES, ARMATURE BRUSHES, MAGNETIC CORES; ELECTRON TUBES INCLUDING BRAUN TUBES, RECTIFIER TUBES, DISCHARGE TUBES; AND SEMI-CONDUCTOR DEVICES INCLUDING DIODES, TRANSISTORS, AND THERMISTORS