Today in 1915, US Patent 1162515 A was issued, an invention of Frank W. Rickers, assigned to the Schaefer Brewing Co., for his “Process For Treating Cement Beer-Fermenting Tanks.” There’s no Abstract, although in the description it includes this summary:

The object of the present invention is the production of a beer fermenting tank constructed of hydraulic cement or cement concrete or reinforced cement concrete which shall avoid the disadvantages incident to those previously constructed, and which shall be economical to construct, and which shall be substantially permanent when constructed.