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Water-Heater.

Description: Patent for a water heater with a two-part jacket that allows the circulation of heat and products of combustion to maximize its fuel efficiency.
Date: June 21, 1921
Creator: Fowles, Alfred T.
Partner: UNT Libraries Government Documents Department

Attaching-Ring.

Description: Patent for an attaching ring to connect a boiler to a water heater jacket that is described in pending application Serial No. 304,041.
Date: June 21, 1921
Creator: Fowles, Alfred T.
Partner: UNT Libraries Government Documents Department
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