Collection
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Headwear
Patent for headwear. Illustrations included.
Date:
August 23, 1904
Creator:
Brown, Bettie
System:
The Portal to Texas History
Apparatus for Separating or Concentrating Ores
Patent for improvements in apparatus for separating or concentrating ores through a flotation method.
Date:
August 31, 1920
Creator:
Cole, David
System:
The Portal to Texas History