Today in 1953, US Patent 2631393 A was issued, an invention of Lionel S Hetherington, for his “Illuminated Tap.” There’s no Abstract, but in the description it states that the “invention relates to illuminated taps and more particularly to an electrically illuminated tap adapted to be used as an advertising device..” In addition, “one object of this invention is to advertise the beverage available on draught at the tap” and “Another object is to visibly indicate the specific beverage to be drawn from a specific tap.”