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Soda-Ash Process.

Description: Patent for a new process to create soda-ash, also known as sodium carbonate. Includes the detailed steps to this process and the chemical reactions involved.
Date: June 1, 1915
Creator: Hirt, Jules Hector
Partner: UNT Libraries Government Documents Department

Reeling Device.

Description: Patent for a reeling device that helps tie both mail matter and packages of articles in an efficient manner. It can be used on various sized mail and packages with minimum effort using tying cord and a clamping device.
Date: June 1, 1915
Creator: Gillespie, Charles W.
Partner: UNT Libraries Government Documents Department
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