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Thrust Bearing
Patent for a thrust bearing. Illustration included.
Date:
January 7, 1913
Creator:
Johnston, Horace G.
System:
The Portal to Texas History
Cotton-Chopper
Patent for an improved type of cotton chopper that thins rows of plants on both flat and rough terrain. Includes illustrations and instructions.
Date:
June 10, 1913
Creator:
Hellums, Oscar S.
System:
The Portal to Texas History