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Patent for an electrical battery. Illustration included.

Date: June 14, 1904

Creator: Haschke, Juluis E. & Haschke, Feodor G.

Partner: UNT Libraries Government Documents Department

Patent for a boiler-skimmer that improves the hinge joint so that water or scum will have free access there and in all positions of the skimmer.

Date: October 14, 1919

Creator: Phillips, Eugene N. & Dick, Harvey H.

Partner: UNT Libraries Government Documents Department