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Elevated Electric-Car Line.

Description: Patent for certain new and useful improvements in elevated electric car lines, including instructions and illustrations.
Date: December 26, 1899
Creator: Cooley, Joe H.
Partner: UNT Libraries Government Documents Department

Rubber-Extracting Machine

Description: Patent for a machine that extracts rubber from plants. Illustrations included.
Date: May 26, 1908
Creator: Kirk, Seth
Partner: UNT Libraries Government Documents Department
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