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Landing Device for Aeroplanes.

Description: Patent for improvements in landing devices for aeroplanes that can be controlled by the aviator and adjusted with the direction of the plane's movement as it lands.
Date: September 7, 1920
Creator: Martin, Ernest L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Water-Heating Attachment for Internal-Combustion Motors.

Description: Patent for a water heating attachment for internal combustion motors that will allow the cooling fluid in said motors to remain heated even when the motor is at rest, especially during freezing temperatures, including illustration.
Date: December 7, 1920
Creator: Clayton, Oscar B. & Oberwetter, George T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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