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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

Cleaning Apparatus.

Description: Patent for a cleaning apparatus, which cleans objects by blasting air across them and has an air cleaning system for use after the cleaning is done.
Date: June 1, 1909
Creator: Mayo, William C. & Houlehan, John
Partner: UNT Libraries Government Documents Department
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