73492378
Jul 30, 1984
May 20, 1986
SOUND CONTROL CONSOLES, PROFESSIONAL AUDIO AND VIDEO TAPE RECORDERS, AND SOUND TRANSMISSION SYSTEMS COMPRISING AMPLIFIERS, EQUALISERS, COMPRESSOR/EXPANDERS, SIGNAL PROCESSORS, SPECIAL EFFECTS GENERATORS, AND MATRIX SWITCHERS ALL FOR BROADCASTING OR STUDIO USE
Electrical and Scientific Apparatus