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Aeroplane-Tail.
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:
Joseph, M. Krowka
System:
The Portal to Texas History
Wrench
Patent for a wrench. Illustrations included.
Date:
January 3, 1911
Creator:
Humphries, Joseph T.
System:
The Portal to Texas History