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Improvement in Middlings-Purifiers.
Patent for a "machine for purifying the middlings in the process of making flour that will free them more completely from impurities that has heretofore been done, and to construct the parts of the machine so that air-blasts will be completely under control" (lines 8-13) including illustrations.
Date:
June 3, 1879
Creator:
White, Henry
System:
The Portal to Texas History