Computers, computer adapter boards, computer monitors, computer printers, computer peripherals, acoustic couplers, data couplers, electronic alarms, computer sound cards, amplifiers, antennas, acoustic horns, electronic remote ignition starters for use in internal combustion engines, sound transmission devices, namely, loudspeakers, audio-visual equipment, namely, video compact disc players, video cassette recorders, audio cassette recorders, compact disc players, stereo amplifiers, phonograp...