74667403
Apr 28, 1995
Dec 31, 1996
power amplifiers; MIC/line mixers; mixer receivers; signal processing electronics, namely equalizers; electronic telephone interconnect devices, namely, audio controlled relays and selective paging relays, tone generators, telephone trunk access paging adapters, telephone ringing generators, telephone station paging adapters, and zone page controllers; audio signal test equipment; and parts thereof
Electrical and Scientific Apparatus