Today in 1895, US Patent 535267 A was issued, an invention of Louis Wagner and John Marr, for their “Electrolytic Conduit for Beer or Other Liquids.” There’s no Abstract, but the description states that their “invention relates to that class of apparatus in or by which an electric current, preferably of an alternating character, may be applied to or through liquids for the purpose, among other things, of destroying the life of organisms which would otherwise cause the deterioration or souring of beer, or effect similar or other objectionable results in other liquids.”