78225586
Mar 14, 2003
Feb 7, 2006
Loudspeakers and loudspeaker systems comprising powered subwoofers, coaxials, transducers, loudspeaker horns, tweeters, woofers, mid-range speakers and crossovers, electrical circuitry, amplifiers and processors, namely, car audio amplifiers and processors, digital signal processors, sound processors, data processors and surround processors
Electrical and Scientific Apparatus