UNT Libraries Government Documents Department - 4 Matching Results

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Brick Truck: Patent for a truck that is designed to make the transportation of bricks easier as well as the transportation of other materials.
Drill-Stem Clamp for Rotary Drilling-Machines: Patent for a rotary well drilling stem clamp which reduces wear on the machine and can be used with different size drill stems.
Heading Holder Attachment for Type Writers: Patent for a head holder attachment for type writers. This invention is for the purpose to make a removable attachment that holds prearranged headings.
Pin-Box and Fastener.: Patent for a pin box fastener, which holds the tape inside the box while allowing the pins to be withdrawn.