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Spring-Wheel.

Description: Patent for new improvements for Spring-Wheels "in which the springs are rigidly secured to the hub portion and pivotally connected with the rim portion" (lines 10-12) including construction and illustrations.
Date: June 29, 1920
Creator: Rozankovich, Thomas
Partner: UNT Libraries Government Documents Department

Valve for Flushing-Tanks.

Description: Patent for a flushing tank valve that reduces the time it takes to fill the tank with a higher accuracy for shut off levels.
Date: June 21, 1921
Creator: Sweeny, John S.
Partner: UNT Libraries Government Documents Department

Flushing tank for siphon closets.

Description: Patent for flushing tanks to connect to siphon closets that is improvement vacuum
Date: June 21, 1921
Creator: Sweeny, John S.
Partner: UNT Libraries Government Documents Department
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