74588398
Oct 13, 1994
Nov 14, 1995
phonograph pickups, phonograph pickup cartridges, phonograph styli, phonograph stylus force gauges, microphones, microphone cartridges, microphone cables, microphone transformers, vibration pickup transducers, telephone handsets, loudspeakers, electronic consoles, microphone mixer amplifiers, preamplifiers, power amplifiers, equalization amplifiers, limiting amplifiers, isolation amplifiers, audio electronic systems comprising microphones, preamplifiers, consoles, amplifiers, equalizers, and loudspeakers, teleconferencing systems comprising microphones, loudspeakers, cables, and echo cancelers, and stands, covers, carrying cases, transformers, and cables for microphones, consoles, amplifiers and loudspeakers
Electrical and Scientific Apparatus