75451370
Mar 16, 1998
Sep 25, 2001
audio loudspeakers; sound systems and assembly kits comprising loud speakers cabinet, dampers, crossover cables and transducers; sound transducers; chassis; loud speaker housings; diplexers; crossover networks with one high pass filter and one low pass filter; electrical and electronic, active and passive filters for damping loud speakers; amplifiers for loud speakers
Electrical and Scientific Apparatus