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Change-Speed Mechanism for Tractor-Truck Motor-Vehicles
Patent for a machine that can be used either as a truck for traveling over highways or as a tractor for farm work.
Date:
October 28, 1919
Creator:
Miller, William J.
System:
The Portal to Texas History
Tire Structure
Patent for a tire structure that eliminates circumferential differences and also renders a simpler, less expensive model for tire construction.
Date:
October 7, 1919
Creator:
Smith, Jesse G.
System:
The Portal to Texas History