Today in 1897, US Patent 580536 A was issued, an invention of Jacob F. Tiieurer and Paul Fischer, assigned to The Pabst Brewing Company, for their “Process of and Apparatus for Finishing Beer.” There’s no Abstract, but the description says simply it’s an “invention which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon, which forms a part of this specification. The main object of our invention is to finish beer and other beverages in such a way as to give them the desired freshness, vivacity, and keeping qualities, and in the attainment of that object to economize space and time and to produce a superior article.”