Today in 1902, US Patent 694584 A was issued, an invention of Otto Selg and Carl Guntrum, for their “Process Of Converting Wort Into Beer.” There’s no Abstract, but the description begins by explaining that in their new invention the “body of the yeast has been withdrawn [and] it is impregnated with carbonic-acid gas and simultaneously clarified. Thus the separate processes heretofore carried on in the fermenting-tub, the storage-tub, and the chipcask are all combined and the latter two processes are carried on simultaneously.”