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Fusible Plug.

Description: Patent for a fusible plug for steam boilers in trains that can be easily replaced without the boiler stopping its production.
Date: January 21, 1908
Creator: Hacker, Louis Paul
Partner: UNT Libraries Government Documents Department

Heater.

Description: Patent for a heater powered by oil, which provides uniform heating of rooms, uses as little oil as possible to maintain heat, and does not get soot on objects in the room it is in.
Date: January 21, 1908
Creator: Callihan, Willie H.
Partner: UNT Libraries Government Documents Department
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