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Adjustable Electric-Light Holder.
Patent for an adjustable electric-light holder for automobiles.
Date:
November 26, 1918
Creator:
Balke, Morris
System:
The Portal to Texas History
Triple Valve.
Patent for a triple valve for brake systems on trains, which reduces pressure in the air pipes of the train and automatically brakes if there is a broken air hose.
Date:
July 26, 1910
Creator:
Torbron, Orin F.
System:
The Portal to Texas History