MAGNAVOX

ELECTRICAL SOUND-AMPLIFYING DEVICES, [LOUD-SPEAKING TELEPHONES, MARINE TELEPHONES,] AIRCRAFT-TELEPHONES, [DESK-TELE PHONES,] AUDION-FREQUENCY-AMPLIFYING CABINETS, [CONTROL-BOXES FOR LOUD-SPEAKING TELEPHONES, LOUD SPEAKING TRANSMITTERS, JUNCTION-BOXES,] ANTINOISE-TELEPHONES [, AND MASTER-RINGERS FOR MARINE TELEPHONE EQUIPMENT]