73133276
Jul 8, 1977
Apr 8, 1980
MICROPHONE TRANSFORMERS; VIBRATION PICKUUP TRANSDUCERS; TELEPHONE HEADSETS; LOUDSPEAKERS; MIXER PREAMPLIFIER CONSOLES FOR MIXING AND RECORDING SOUND; MICROPHONEMIXER AMPLIFIERS; PREAMPLIFIERS; POWER AMPLIFIERS; EQUALIZATION AMPLIFIERS; LIMITING AMPLIFIERS; ISOLATION AMPLIFIERS; AUDIO ELECTRONIC SYSTEMS COMPRISING MICROPHONES PREAMPLIFIERS; CONSOLES, AMPLIFIEERS; EQUALIZERS, AND LOUDSPEAKERS; STANDS, COVERS, CARRYING CASES, TRANSFORMERS,AND CABLES FOR MICROPHONES, CONSOLES, AMPLIFIERS, AND LOUDSPEAKERS; AND COMPONENT PARTS FOR ALL OF THE ABOVE PRODUCTS S, AMPLIFIERS, AND LOUDSPEAKERS; AND COMPONENT PARTS FOR ALL OF THE ABOVE PRODUCTS
Electrical and Scientific Apparatus