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Toy Gun

Description: Patent for a toy gun. Illustrations included.
Date: April 13, 1909
Creator: Griffith, Jesse B.
Partner: UNT Libraries Government Documents Department

Seal-Lock.

Description: Patent for a seal lock for railroad cars, which will show whether an unauthorized entry has been made by requiring the seal ton be broken before the lock opens.
Date: April 27, 1909
Creator: Christian, Edward L.
Partner: UNT Libraries Government Documents Department

Governor for Explosive-Engines.

Description: Patent for a governor for explosive engines for use in trains, which will increase the fuel efficiency of the engines.
Date: April 27, 1909
Creator: Mayo, William C. & Houlehan, John
Partner: UNT Libraries Government Documents Department

Air-Cleaning System

Description: Patent for an air cleaning system to be used in homes. Illustrations included.
Date: April 20, 1909
Creator: Mayo, William C. & Houlehan, John
Partner: UNT Libraries Government Documents Department
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