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Drawing for an "Improvement In Windmills"

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Patent Drawing for an "Improvement In Windmills" by Thomas Van Devort (detail)
Depicted here is the drawing for an "Improvment in Windmills," patented by Thomas S. Van Devort of Ypsilanti, Michigan, on July 25, 1871.
More Patents & Inventions in ARC…

Today’s Document from the National Archives

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