U.S. federal trademark · Serial No. 79041555 · Reg. No. 3392205
Planning and design of electroacoustic sound transducers and loudspeaker systems
Acoustic measuring systems, namely, apparatus for recording, transmission and reproduction of sound and images, electroacoustic sound transducers, loudspeaker cabinets and installation enclosures, amplifiers, and electronic control apparatus and signal processors for sound amplifiers
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