Today in 1940, US Patent 2194319 A was issued, an invention of John Panagopoulos, for his “Beer Drawing System.” There’s no Abstract, although in the description it includes this summary:

Among the objects of the invention are to provide an installation of the above type in which the brew from the kegs is dispensed at a remote spigot usually on the floor above the keg, the brew being cooled and maintained not only within the kegs but also through its course of flow to the remote faucet at the bar.