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Well Screen.

Description: Patent for a well screen device. The device can keep particulates out of the well water while also restricting water to flow into the well without being released back into the soil.
Date: February 1, 1921
Creator: McLean, Marrs
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Building-Block.

Description: Patent for building block that is easily formed or molded. The building block forms tiers to easy move around and modify.
Date: February 1, 1921
Creator: Pace, Vara L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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