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Heater.

Description: Patent for an under-the-bathtub heater.
Date: September 21, 1920
Creator: Bowlus, Charles F.
Partner: UNT Libraries Government Documents Department

Foldable Landing Gear for Aeroplanes

Description: Patent for foldable landing gear for airplanes. This landing gear is designed to be folded into the body of the plane, by the pilot.
Date: September 21, 1920
Creator: McCarroll, Frank
Partner: UNT Libraries Government Documents Department
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