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Silo Construction

Description: Patent for silo, with walls constructed out of plastic,
Date: January 16, 1917
Creator: Pierson, Ludvig B.
Partner: UNT Libraries Government Documents Department

Mold for Tubular Articles.

Description: Patent for an improved mold for making concrete tubular casings for dug wells with opposite grooves so the casings can be connected together when used, with illustrations.
Date: May 8, 1917
Creator: Schuettig, Emil A.
Partner: UNT Libraries Government Documents Department
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