75087472
Apr 12, 1996
Dec 23, 1997
electronic audio equipment, namely, speakers, speaker selectors, speaker switches, transmitters, receivers, repeaters, processors, sensors, amplifiers, volume controls, plates, stereo boxes, speaker cables, intercoms, paging systems comprising a receiver and amplifier, jacks, impedance matching systems comprising an attenuator and electrical terminal connectors, and impedance measuring instruments, namely, electronic impedance meters
Electrical and Scientific Apparatus