An innovative, unique visual display for a powered car audio amplifier. The audio amplifier includes a transparent cover plate, preferably formed of methyl methacrylate, having a name or pattern etched or engraved in the undersurface of the cover plate. A black light or neon gas light tube surrounds...http://www.google.fr/patents/US6196694?utm_source=gb-gplus-shareBrevet US6196694 - Audio amplifier having illuminated cover plate
