71527518
Jul 5, 1947
Aug 24, 1948
ELECTRICAL APPARATUS-NAMELY, LOUD SPEAKERS OF BOTH DIRECT RADIATOR AND HORN TYPES, SOUND REPRODUCERS COMPRISING DIRECT RADIATOR LOUD SPEAKERS AND ENCLOSURES THEREFOR, LOUD SPEAKER SYSTEMS HAVING A PLURALITY OF LOUD SPEAKER UNITS WITH OR WITHOUT APPARATUS CONTAINING FREQUENCY DIVIDING NETWORKS, TRANSFORMERS, ELECTRONIC POWER SUPPLY UNITS, VOLUME AND LEVEL CONTROL APPARATUS, ACCESSORIES FOR LOUD SPEAKERS INCLUDING SUPPORTING AND TILTING MECHANISMS, AND PARTS FOR SUCH ELECTRICAL APPARATUS
Housewares and Glass