UNT Libraries Government Documents Department - 2 Matching Results

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Well Pumping Apparatus

Description: Patent for well pumping apparatus. This invention is designed for the improvement of pumping liquid from deep wells. Illustration included.
Date: September 29, 1908
Creator: Stephenson, William M.

Automatic Boiler-Feed

Description: Patent for a steam boiler which automatically fills the boiler with water to the proper levels and keeps the levels steady.
Date: August 11, 1908
Creator: Twombly, Harry Denny
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