UNT Libraries Government Documents Department - 3 Matching Results

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Railroad Tie
Patent for a type of support for the rails in railroad tracks.
Safety-Trap.
Patent for class of steam valve safety traps to prevent the interference of heavy particles with the flow of steam ensuring efficient working of the machine.
Transporting Truck
Patent for "improvements in transporting trucks for agricultural implements" (Lines 10-11) including illustrations.
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