79041555
May 21, 2007
Mar 4, 2008
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
Electrical and Scientific ApparatusPlanning and design of electroacoustic sound transducers and loudspeaker systems
Computer and Scientific