Electrical communication apparatus and instruments, namely, telephones, answering machines, radio telephones, facsimile machines; instruments for reproducing, recording, transmitting, receiving, producing or editing sound or images or for processing audio or video signals, namely, television sets, radios, acoustic diaphragms, loudspeakers, speaker systems and cabinets therefor, horns for loudspeakers, musical juke boxes, record players, compact disc players and recorders, cassette players and recorders, audio disc players and recorders, pickups, MP3 players, stereo sets, headphones, microphones, client-server systems for audio and video networks, namely audio and video signal servers and receivers, video cameras and recorders, hard disk recorders, video disc players and recorders, DVD players and recorders, video projectors and screens, visual displays, amplifiers, graphic equalizers, audio mixers and controllers, encoders and decoders of audio or video signals, and remote controls therefor; CD cleaners, DVD cleaners, record cleaners, audio head cleaning cassettes and video head cleaning cassettes; magnetic or optical recording media for use in reproducing or recording sound, images, or data, namely, blank or pre-recorded magnetic discs and optical discs, blank video and audio tapes; computers and internal, external and integrated computer peripherals and parts thereof; and computer software for use in reproducing, recording, transmitting, receiving, producing, or editing sound or images, or for use in processing audio or video signals