Improved Thrasher and Separator. BROWN'S THRASHER AND SEPARATOR. Work at the Patent Office. 'The Summit Radiating Paddle Wheel.”, scientific american, 1866-03-17
Improved Thrasher and Separator. BROWN'S THRASHER AND SEPARATOR. Work at the Patent Office. 'The Summit Radiating Paddle Wheel.”, scientific american, 1866-03-17
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