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Air Pump
Patent for an air pump designed to have a strong cylinder and be able to equal quantities of air upon both the upward and downward motion of the piston.
Date:
October 28, 1919
Creator:
Keating, P. W.
System:
The Portal to Texas History
Combined Cotton Chopper and Cultivator
Patent for a combined cotton chopper and cultivator. Illustration included.
Date:
October 11, 1910
Creator:
Carter, Chester Clark
System:
The Portal to Texas History