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Treatment of Ores.
Patent for the treatment of ores which has a improvised process of chloridizing ores, concentrates, and other metallurgical products.
Date:
April 19, 1921
Creator:
Hirt, Jules Hector
System:
The Portal to Texas History
Vehicle-Wheel Attachment.
Patent for a vehicle-wheel attachment to prevent wheel from moving and vehicle theft.
Date:
March 1, 1921
Creator:
Rodriguez, Mariano Magdaleno
System:
The Portal to Texas History