73144409
Oct 12, 1977
Nov 10, 1981
Audio Equipment-Namely, Microphones, Loudspeakers, Musical Instrument Amplifiers, Sound Pickups, Single and Multiple Channel Sound Amplifiers, Sound Amplifiers for Creating Special Sound Effects, Combined Sound Amplifier and Loudspeaker Units, Sound Echo and Multiple Echo Units, Sound Mixers, Special Sound Effects Modules, Reverberation Controls, Flanger Controls, Remote Controls, Foot Switches and Controls, and Connector Leads and Cables for Such Equipment
Electrical and Scientific Apparatus