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Aeroplane.

Description: Patent for aeroplane construction to include improvements to air motor protection to minimize resistance and the use of air cups to direct the full force of air to the motor shaft, including illustrations.
Date: November 15, 1921
Creator: Smith, Joseph A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Aeroplane-Tail.

Description: Patent for improvements to the tail of aeroplanes. This invention is to be used to help control the flight of planes or heavy projectiles, and would not have effects on the equilibrium or be difficult to use.
Date: January 18, 1921
Creator: Krowka, Joseph M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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