ALGO

TELEPHONE APPARATUS, NAMELY, DOOR PHONES, ALSO KNOWN AS INTERCOMS, PAGING SYSTEMS, NAMELY VOICE AND SOUND PAGING AMPLIFIER UNITS, ALSO KNOWN AS, SOUND AMPLIFIERS, AND TELEPHONE TERMINAL EQUIPMENT, NAMELY AUTOMATIC TELEPHONE ANSWERING DEVICES, ALSO KNOWN AS, TELEPHONE ANSWERING MACHINES, AND TELEPHONE ALERTING DEVICES, NAMELY ELECTRONIC HORNS, SPEAKERS, STROBE LIGHTS, AND RINGERS, LOOP EXTENDERS, RING GENERATORS, MODULAR CORDS, AND RING REPEATERS