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Stone-Drilling Machine.

Description: Patent for a stone drilling tool, which has water automatically flowing through it.
Date: March 24, 1908
Creator: Weiss, Adolf
Partner: UNT Libraries Government Documents Department

Fly-Trap

Description: Patent for an insect trap for flies. Illustrations included.
Date: December 24, 1912
Creator: Krueger, Samuel
Partner: UNT Libraries Government Documents Department
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