72061175
Oct 23, 1958
Aug 4, 1959
AMPLIFIED VOICE TYPE OF INTER-COMMUNICATION EQUIPMENT COMPRISING INTEROFFICE TELEPHONE COMMUNICATION APPARATUS, ELECTRICAL COMMUNICATION AMPLIFIERS, PUBLIC ADDRESS SYSTEMS, TELEPHONE APPARATUS, PAGING SYSTEMS, MICROPHONES AND ELECTRIC LOUDSPEAKERS, AM AND FM TUNERS, ANTENNAS, ELECTRICAL WIRE, AND CABLE
Housewares and Glass