UNT Libraries Government Documents Department - 4 Matching Results

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Ant Trap.
Patent for an in-ground ant trap that prevents the ants from escaping once caught in the trap, including instructions and illustrations
Car-Ventilating System.
Patent for a railroad car ventilating system that does require opening the windows.
Cultivator Attachment
Patent for a cultivator attachment that allows the cultivator height to be adjusted for digging. Illustrations included.
Palo Pinto Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
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