21 AM AND FM RADIO RECEIVERS, MULTIPLE BAND RADIO RECEIVERS, PORTABLE RADIOS, AUOTOMOBILE RADIOS AND SPEAKERS, TRANSISTOR RADIOS, ELECTRIC CLOCK-RADIO COMBINATIONS, ELECTRIC DRY-CELL BATTERIES, TELEVISION SETS, COMBINATION RADIO-PHONOGRAPH UNITS, ELECTRICALLY-OPERATED SPEADKER SYSTEMS, RADIO-HEADPHONES, STEREO TUNERS, AMPLIFIERS, AND STEREO COMPONENT SYSTEMS