21 ELECTRIC COFFEE AND TEA POTS AND PERCOLATORS, ELECTRIC DISHWASHING MACHINES, ELECTRIC VACUUM CLEANERS,ELECTRIC BROILERS, ELECTIC COOKERS, AND ATMOSPHERIC ELECTRIC HEATERS, STOVES AND LAMPS, ELECTROLIERS, AND RADIO RECEIVING, DETECTING, AND TRANSMITTING APPARATUS AND PARTS THEREOF COMPRISING RADIO RECEIVING SETS, LOUD SPEAKERS, AERIAL LOOPS, AMPLIFIERS CONSISTING OF ELECTRON TUBES, VACUUM TUBES, GRID LEAKS; HEAD PHONES, AND RADIO TRANSMITTING SETS AND PARTS THEREOF