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Hydraulic Classifier.
Patent for hydraulic classifier for the treatment of ore. The invention subjects settling solid particles to a secondary classification and prevent the contamination of the settling solids before they are discharged.
Date:
March 21, 1922
Creator:
Allen, Charles
System:
The Portal to Texas History
Cotton-Chopper
Patent for a cotton chopper that can be used for cultivation.
Date:
March 21, 1911
Creator:
Crow, Jesse J.
System:
The Portal to Texas History